DE102020126683A1 - Vehicle guidance system and method for operating a driving function depending on environmental information - Google Patents

Abstract

A vehicle guidance system for providing a driving function for automated longitudinal guidance of a vehicle is described. The vehicle guidance system is set up to determine surroundings information relating to surroundings of a first signaling unit lying ahead in the direction of travel of the vehicle. The vehicle guidance system is also set up to operate the driving function for automated longitudinal guidance of the vehicle on the first signaling unit as a function of the environmental information.

Description

The invention relates to a vehicle guidance system and a corresponding method for operating a driving function, in particular a driver assistance function, of a vehicle in connection with a signaling unit.

A vehicle can have one or more driving functions that support the driver of the vehicle in guiding the vehicle, in particular in guiding it longitudinally. An exemplary driving function to support the longitudinal guidance of a vehicle is the Adaptive Cruise Control (ACC) function, which can be used e.g defined target distance to a front vehicle driving in front of the vehicle.

In urban areas, when a vehicle is traveling on a road, it is common for a vehicle to encounter intersections of the road on which the vehicle is traveling with one or more other traffic routes (e.g. with another road, with a pedestrian walkway, etc.). A traffic signal system and/or a traffic sign (such as a stop sign) can be arranged at a junction, which regulates the right of way at the junction. A traffic signal system and/or a traffic sign for determining the right of way and/or permission to drive in or over a junction is generally referred to in this document as a signaling unit.

The present document deals with the technical task of providing a driving function, in particular a driver assistance function, for automated longitudinal guidance of a vehicle, which is set up to take signaling units into account in a reliable and robust manner, in particular to ensure the availability and/or safety and/or the to increase the comfort of the driving function.

The object is solved by each of the independent claims. Advantageous embodiments are described inter alia in the dependent claims. It is pointed out that additional features of a patent claim dependent on an independent patent claim without the features of the independent patent claim or only in combination with a subset of the features of the independent patent claim can form a separate invention independent of the combination of all features of the independent patent claim, which can be made the subject of an independent claim, a divisional application or a subsequent application. This applies equally to the technical teachings described in the description, which can form an invention independent of the features of the independent patent claims.

According to one aspect, a vehicle guidance system for providing a driving function for automated longitudinal guidance of a vehicle is described. The driving function can in particular be designed to automatically guide the vehicle longitudinally on and/or in connection with a signaling unit. The driving function can be designed according to SAE Level 2. In other words, the driving function can, if necessary, provide automated driving and/or driver support (with regard to longitudinal guidance) in accordance with SAE Level 2. The driving function can be limited to the longitudinal guidance of the vehicle. The lateral guidance of the vehicle can be provided manually by the driver during operation or by an additional and/or separate driving function (e.g. by a lane departure warning system).

The vehicle guidance system can be set up to automatically guide the vehicle longitudinally according to a set or desired speed and/or according to a desired distance from a vehicle in front driving (directly) in front of the vehicle. For this purpose, the vehicle guidance system can provide a speed controller, by means of which the actual driving speed of the vehicle is set, in particular regulated, according to the set or target speed. Alternatively or additionally, a distance controller can be provided, by means of which the actual distance of the vehicle from the vehicle in front is set, in particular regulated, according to the target distance. If there is no relevant vehicle in front or if the vehicle in front is driving faster than the set or target speed, the driving speed of the vehicle can be regulated. Alternatively or additionally, if the vehicle in front is driving slower than the set or target speed, the distance between the vehicle and the vehicle in front can be regulated. The vehicle guidance system can thus be set up to provide an adaptive cruise control (ACC) driver assistance function.

The vehicle or the vehicle guidance system can include a user interface for interaction with a user, in particular with the driver, of the vehicle. The user interface may include one or more controls that allow the user to set the set or target speed and/or target distance. Alternatively or in addition, the one or more control elements on the Nut Zer enable a previously determined set and/or desired speed and/or a previously determined desired distance of the vehicle for the operation of the driving function to be confirmed. The one or more operating elements can be designed to be operated with a hand and/or with a finger of the driver. Alternatively or additionally, the one or more operating elements can be arranged on a steering means (in particular on a steering wheel or on a steering bracket) of the vehicle.

An exemplary control element (in particular a plus/minus control element) is a button and/or a rocker, with which the set and/or target speed or the target distance can be increased or reduced. Another exemplary control element (in particular a set control element) is a button with which a current driving speed of the vehicle can be set as the set and/or target speed or with which a current distance between the vehicle and the vehicle in front can be set as the target distance can. Another exemplary control element (in particular a resume control element) is a button with which a previously set set and/or target speed or a previously set target distance can be confirmed or reactivated again.

The user interface may further include one or more output elements (e.g., a screen and/or a speaker and/or a vibrating element) that can be used to effect outputs to the user of the vehicle.

Furthermore, the vehicle guidance system can be set up to take into account one or more signaling units on the roadway (in particular street) and/or route traveled by the vehicle in the automated longitudinal guidance. A signaling unit can be provided to determine the right of way at a node (in particular at an intersection) of the roadway network traveled by the vehicle. The determination of the right of way can be variable over time (e.g. in the case of a traffic signal system, for example a traffic light system, with one or more different signal groups for one or more different directions of travel of the vehicle at the junction) or be fixed (e.g. in the case of a traffic sign, such as a stop sign).

• • einen Typ der Signalisierungseinheit, insbesondere, ob es sich bei der Signalisierungseinheit um eine Lichtsignalanlage oder um ein Verkehrszeichen handelt; und/oder
• • eine Anzahl von unterschiedlichen Signalgruppen der Signalisierungseinheit für unterschiedliche Fahrtrichtungen an dem Knotenpunkt des Fahrbahnnetzes, an dem die Signalisierungseinheit angeordnet ist bzw. mit dem die Signalisierungseinheit assoziiert ist; und/oder
• • eine Position (z.B. die GPS-Koordinaten) der Signalisierungseinheit und/oder der Haltelinie der Signalisierungseinheit innerhalb des Fahrbahnnetzes; und/oder
• • ein relativer Abstand der Haltelinie zu der zugehörigen Signalisierungseinheit.

The vehicle guidance system can be set up to determine data relating to a signaling unit lying ahead in the direction of travel of the vehicle. The data may include map data relating to signaling units in the roadway network traveled by the vehicle. The map data can each include one or more attributes for a signaling unit. The one or more attributes for a signaling entity may indicate or include:

• • a type of signaling unit, in particular whether the signaling unit is a traffic light system or a traffic sign; and or
• • a number of different signal groups of the signaling unit for different directions of travel at the node of the roadway network at which the signaling unit is arranged or with which the signaling unit is associated; and or
• • a position (eg the GPS coordinates) of the signaling unit and/or the stop line of the signaling unit within the roadway network; and or
• • a relative distance of the stop line to the associated signaling unit.

The vehicle guidance system can be set up to determine the actual position (e.g. the current GPS coordinates) of the vehicle within the roadway network using a position sensor (e.g. a GPS receiver) of the vehicle. The map data can then be used to identify a (e.g. the next) signaling unit on the vehicle's route. Furthermore, one or more attributes related to the recognized signaling entity can be determined.

Alternatively or additionally, the data relating to a signaling unit ahead in the direction of travel of the vehicle can include environmental data relating to the signaling unit, or be determined based on environmental data. The surroundings data can be recorded by one or more surroundings sensors of the vehicle. Exemplary environment sensors are a camera, a radar sensor, a lidar sensor, etc. The one or more environment data can be set up to capture sensor data (i.e. environment data) in relation to the environment in front of the vehicle in the direction of travel.

The vehicle guidance system can be set up to recognize on the basis of the surroundings data (in particular on the basis of the sensor data of a camera) that a signaling unit is arranged in front of the vehicle in the direction of travel. An image analysis algorithm, for example, can be used for this purpose. Furthermore, the vehicle guidance system can be set up to determine the type of signaling unit (eg traffic signal system or traffic sign) on the basis of the surroundings data. Furthermore, the vehicle guidance system can be set up to enter the (signalling) status of the signaling on the basis of the environment data to be determined in relation to permission to cross the node associated with the signaling unit. In particular, the colors (green, yellow or red) of one or more signal groups of a traffic light system can be determined.

The vehicle guidance system can be set up to take a recognized signaling unit into account in the automated longitudinal guidance of the vehicle. In particular, the vehicle guidance system can be set up to determine on the basis of the data relating to the recognized signaling unit, in particular on the basis of the color of a light signal or a signal group of the signaling unit indicated by the data, whether the vehicle is at the signaling unit, in particular at the stop line the signaling unit, must hold or not. For example, it can be recognized that the vehicle has to stop because the signal group relevant to the vehicle is red. Alternatively, it can be recognized that the vehicle does not have to stop because the signal group relevant to the vehicle is green. In a further example, it can be recognized that the vehicle has to stop because the signaling unit is a stop sign.

The vehicle guidance system can also be set up to bring about the vehicle being automatically stopped at the recognized signaling unit if it is determined that the vehicle must stop at the signaling unit. For this purpose, an automated deceleration process (to a standstill) can be effected. The vehicle can be automatically guided to or in front of the stop line of the signaling unit. During the automated deceleration process, one or more wheel brakes (e.g. one or more friction brakes or one or more regenerative brakes) can be controlled automatically by the vehicle guidance system in order to brake the vehicle (until it comes to a standstill). The time course of the delay caused can depend on the available braking distance up to the recognized signaling unit.

Alternatively or additionally, the vehicle guidance system can be set up to cause the vehicle to be automatically guided past the recognized signaling unit, in particular over the stop line of the signaling unit, if it is determined that the vehicle does not have to stop at the signaling unit. The speed and/or distance control can be continued according to the set or desired speed and/or according to the desired distance from the vehicle in front.

The vehicle guidance system can thus be set up to provide an ACC driving function taking into account signaling units.

The driving function is also referred to as Urban Cruise Control (UCC) driving function in this document.

As already explained above, the vehicle guidance system can be set up to automatically guide the vehicle longitudinally as part of the driving function depending on a target speed and/or depending on a target distance from a vehicle in front driving in front of the vehicle. Furthermore, the vehicle guidance system can be set up, if a (possibly recognized) signaling unit is not taken into account in the driving function, the vehicle automates depending on the target speed and/or depending on the target distance past the signaling unit, in particular via the Stop line of the signaling unit addition, longitudinally, in particular independently of the color of a light signal of the signaling unit. The driving function can thus (if a signaling unit is not taken into account) possibly be operated as if the signaling unit (and the node associated therewith) did not exist.

The vehicle guidance system may allow the user of the vehicle to configure the driving function via the user interface (e.g. in a configuration menu). If necessary, it can be set whether the driving function should be operated in an automatic mode or should be operated in a manual mode.

In the automatic mode, the driving function can be operated in such a way that a signaling unit that is ahead in the direction of travel and detected by the vehicle guidance system is automatically taken into account when the driving function is operated (and possibly leads to an automated deceleration of the vehicle). In particular, the vehicle guidance system can be set up in the automated mode to automatically take into account a signaling unit detected on the basis of map data and/or environment data, in particular without confirmation by the user of the vehicle, during the automated longitudinal guidance of the vehicle (e.g. in order to automatically delay the vehicle if necessary to effect the vehicle on the detected signaling unit).

On the other hand, the driving function can be operated in manual mode in such a way that the recognized signaling unit is only activated after confirmation by the user of the vehicle at the auto automated longitudinal guidance of the vehicle is taken into account (and possibly leads to an automated deceleration of the vehicle). In particular, the vehicle guidance system can be set up in the manual mode (via the user interface of the vehicle) to issue an offer to the user of the vehicle with regard to the consideration of the recognized signaling unit. For example, the screen may indicate that a signaling device has been detected and that feedback from the user is required (to cause the signaling device to be taken into account in the automated longitudinal guidance of the vehicle). The recognized signaling unit (in particular the signaling status of the signaling unit) can then (in particular only) be taken into account in the automated longitudinal guidance of the vehicle at the signaling unit if the offer is accepted by the user (e.g. by actuating a control element, in particular the set control element). . The vehicle may then be automatically decelerated at the detected signaling unit. On the other hand, the vehicle guidance system can be set up not to take into account and/or to ignore the recognized signaling unit (in particular the signaling status of the signaling unit) during the automated longitudinal guidance of the vehicle at the signaling unit if the offer is not accepted by the user. In this case, the speed and/or distance control can be continued (without taking into account the signaling unit, in particular as if the signaling unit were not present).

The convenience of the driving function can be further increased by providing different (adjustable) modes for the operation of the driving function (in particular the UCC driving function).

The vehicle guidance system can be designed to inform the user of the driving function about the status of the driving function using the user interface. In particular, the user of the driving function can be informed as to whether or not a signaling unit detected by the vehicle guidance system and located ahead in the direction of travel is taken into account during the operation of the driving function, in particular during the automated longitudinal guidance of the vehicle.

In particular, the vehicle guidance system can be set up to determine (e.g. on the basis of the map data and/or the environment data) whether or not a signaling unit ahead in the direction of travel is or can be taken into account in the operation of the driving function. If the signaling unit is taken into account or can be taken into account, an availability output, in particular an availability display, can be issued to inform the user that the signaling unit ahead is taken into account in the automated longitudinal guidance of the vehicle (and thus, if necessary, an automated The vehicle is decelerated at the signaling unit).

Alternatively or additionally, the vehicle guidance system can be set up (if it is determined that the signaling unit ahead is not or cannot be taken into account in the driving function) to effect an unavailability output, in particular an unavailability display (via the user interface) in order to inform the user of the vehicle to inform that the signaling unit ahead is not taken into account in the automated longitudinal guidance of the vehicle (and therefore no automated deceleration of the vehicle is effected depending on the signaling status of the signaling unit).

The comfort and safety of the driving function can be increased further by outputting an availability and/or non-availability output. The availability and/or non-availability outputs can each include an optical, acoustic and/or haptic output.

The vehicle guidance system can be set up to determine that the signaling status of the signal group relevant to the direction of travel of the vehicle in the signaling unit changes (e.g. while the vehicle is approaching the signal group or while the vehicle is stationary at the signal group). For example, it can be recognized that there is a phase change from red to green.

Furthermore, the vehicle guidance system can be set up (in response to the detected phase change) to cause information relating to the changed signaling state of the signal group of the signaling unit to be communicated to the driver of the vehicle. For example, an output element (in particular on a screen) of the user interface can cause a symbol of the recognized signaling unit (and possibly taken into account in the automated longitudinal guidance) to be displayed as long as the signal group is red. After a phase change to green has been detected, the displayed symbol can then be withdrawn if necessary or the output can be ended. So can be conveyed to the driver of the vehicle in a reliable manner that, for example after the vehicle has come to a standstill, a (possibly automated) starting process can be effected on the signaling unit (e.g. by actuating a control element of the user interface). The withdrawal of the display can take place uniformly in the automatic mode and/or in the manual mode of the driving function.

The vehicle guidance system can be set up to issue a takeover request to the driver of the vehicle when the driving function is aborted. For example, it can be recognized that the automated longitudinal guidance (depending on the set and/or desired speed and/or depending on the desired distance) cannot be continued or is not being continued. The driving function can be aborted, for example, if the driver of the vehicle (substantially) intervenes in the longitudinal guidance of the vehicle (e.g. by the driver of the vehicle pressing the brake pedal or the accelerator pedal). A takeover request (i.e. a take-over request, TOR) can then be issued to the driver of the vehicle. The longitudinal guidance then has to be effected again by the driver. The safety of the operation of the vehicle can be increased by issuing a takeover request.

Alternatively or additionally, a takeover request can be issued if manual intervention by the driver in the longitudinal guidance of the vehicle is expected. For example, it can be recognized that the vehicle guidance system can no longer carry out the longitudinal guidance automatically (e.g. in order to reach a specific destination, for example at a signaling unit). In response to this, a takeover request can then be issued to the driver of the vehicle.

A “first” signaling unit is repeatedly discussed in this document in order to identify a specific signaling unit. The “first” signaling entity is not (necessarily) a signaling entity that is first in a list of signaling entities.

The vehicle guidance system can be set up to determine environmental information relating to the environment of a signaling unit ahead in the direction of travel of the vehicle (which is also referred to below as a “first” signaling unit). The environmental information can in particular indicate the complexity or the degree of complexity of the road network in the vicinity of the first signaling unit and/or the complexity or the degree of complexity of the node associated with the first signaling unit.

The environment information relating to the environment of the first signaling unit can be determined on the basis of the map data in relation to the road network traveled by the vehicle and/or on the basis of environment data in relation to the environment of the first signaling unit. In particular, the environment information can be determined on the basis of one or more map attributes of the map data for one or more objects (e.g. for a road or for a junction) in the environment of the first signaling unit.

The driving function for automated longitudinal guidance of the vehicle can then be operated on the first signaling unit as a function of the environmental information. In particular, the degree of automation of the driving function can be adjusted and/or selected as a function of the environmental information. For example, the driving function can be operated in automatic mode or in manual mode depending on the environmental information.

The comfort and/or the availability of the driving function can be increased by taking environmental information into account when operating the driving function, in particular when setting or selecting the degree of automation of the driving function.

The vehicle guidance system can be set up to determine a complexity measure for the complexity of the first signaling unit on the basis of the environmental information. In particular, the complexity of the road network and/or the node in the vicinity of the first signaling unit indicated by the environmental information can be an indication of the complexity of the first signaling unit (in particular when the map data have no map attributes for the first signaling unit from which the complexity the first signaling unit, in particular the number of different signal groups of the first signaling unit can be determined).

The driving function can then be operated on the first signaling unit as a function of the complexity measure determined for the complexity of the first signaling unit. In particular, the driving function can be operated in the manual mode when the complexity measure indicates a complexity of the first signaling unit that is greater than a complexity threshold value. On the other hand, the driving function can be operated in the automatic mode if the complexity measure is a complexity of the first indicates signaling unit that is smaller than the complexity threshold.

The (indirect) determination of the complexity of the first signaling unit from the environment information in relation to the environment of the first signaling unit can further increase the robustness and availability of the driving function.

As already explained above, the environment information in relation to the environment of the first signaling unit can indicate information in relation to the node associated with the first signaling unit. The environmental information can in particular indicate the type of junction from a plurality of different junction types, the plurality of different junction types being, in particular, an intersection with three, four or more different roads or lanes (adjacent to the junction); a junction with two or more continuous roads (extending across the junction); and/or a roundabout. Alternatively or additionally, the plurality of different node types can indicate the number of different roads and/or driving directions at the node. This information can, for example, be determined from the map data on the basis of one or more map attributes for the node.

The environmental information can thus indicate the complexity of the node at which the first signaling unit is located. As the complexity of the node increases, the complexity of the first signaling unit typically also increases (in particular with regard to the number of different signal groups of the first signaling unit). With increasing complexity of the first signaling unit, the degree of automation of the driving function can in turn be reduced (e.g. by switching from automatic mode to manual mode). A particularly comfortable and safe driving function can thus be provided.

The environmental information relating to the environment of the first signaling unit can indicate the number of different lanes of the road or lane on which the vehicle is driving toward the first signaling unit. Alternatively or additionally, the environmental information can display the type of road or lane on which the vehicle is driving towards the first signaling unit. The type of street can be selected from a number of different street types, the number of different street types including in particular: a city street; a country road; an expressway; and/or an access road (e.g. to a motorway). Alternatively or additionally, the environmental information can display the number of possible directions of travel at the junction associated with the first signaling unit and/or the number of possible roads or lanes on which the vehicle can drive away from the junction associated with the first signaling unit.

The complexity of the traffic node and thus of the first signaling unit can be determined in a robust manner using the above-mentioned environmental information. For example, if there is a road with only one lane, it can be assumed that the first signaling unit has a relatively low level of complexity (e.g. with only one signal group), so that the driving function can be operated with a relatively high degree of automation (e.g. in the automatic mode). .

As already explained above, the area information relating to the area surrounding the first signaling unit can display information relating to the road network in the (direct) area surrounding the first signaling unit. For example, the area information can indicate the density of signaling units and/or the density of traffic nodes (in particular intersections) in the road network in the area surrounding the first signaling unit. A relatively high density of signaling units and/or traffic nodes can be an indication of a relatively high complexity of the first signaling unit.

• • ob in dem Umfeld der ersten Signalisierungseinheit, insbesondere auf der von dem Fahrzeug befahrenen Fahrbahn, ein Tunnel angeordnet ist;
• • ob die von dem Fahrzeug befahrene Fahrbahn eine Auffahrt-Rampe (z.B. zu einer Autobahn) umfasst, insbesondere ist;
• • ob in dem Umfeld der ersten Signalisierungseinheit, insbesondere auf der von dem Fahrzeug befahrenen Fahrbahn, eine Umgehungs-Fahrspur, insbesondere eine Bypass-Lane, zur Umgehung der ersten Signalisierungseinheit angeordnet ist; und/oder
• • den Abstand der ersten Signalisierungseinheit zu ein oder mehreren anderen Signalisierungseinheiten.

The environmental information in relation to the area surrounding the first signaling unit can display the following information in particular in relation to the road network in the area surrounding the first signaling unit:

• • whether a tunnel is arranged in the vicinity of the first signaling unit, in particular on the lane traveled by the vehicle;
• • whether the roadway traveled by the vehicle includes, in particular is, an access ramp (eg to a freeway);
• • whether a bypass lane, in particular a bypass lane, for bypassing the first signaling unit is arranged in the vicinity of the first signaling unit, in particular on the roadway traveled by the vehicle; and or
• • the distance of the first signaling unit from one or more other signaling units.

The presence of a tunnel, an on-ramp and/or a bypass lane is typical This is necessarily an indication of a relatively high complexity of the first signaling unit, and can therefore lead to a reduction in the degree of automation of the driving function (in particular to operation in the manual mode of the driving function). In this way, the safety of the driving function can be further increased.

The vehicle guidance system can thus be set up to determine on the basis of the environmental information whether the road network in the vicinity of the first signaling unit and/or the node associated with the first signaling unit has a high level of complexity (greater than a complexity threshold value) or a low level of complexity (less than the complexity threshold). Based on the complexity of the road network and/or the node, the degree of complexity in relation to the complexity of the first signaling unit can then be determined.

The driving function for automated longitudinal guidance of the vehicle can be operated on the first signaling unit depending on whether the road network in the vicinity of the first signaling unit and/or the node associated with the first signaling unit has a high or low complexity. In particular, the driving function can be operated in the manual mode if it has been determined that the road network in the vicinity of the first signaling unit and/or the node associated with the first signaling unit has a high complexity (greater than the complexity threshold value). Alternatively or additionally, the driving function can be operated in the automatic mode if it has been determined that the road network in the vicinity of the first signaling unit and/or the node associated with the first signaling unit has a low complexity (less than the complexity threshold value). A particularly safe and comfortable operation of the driving function can thus be made possible.

The vehicle guidance system can be set up to check on the basis of the map data in relation to the roadway network traveled by the vehicle whether the first signaling unit is recorded in the map data or not; and/or whether the map data include one or more attributes relating to a property, in particular relating to the number of different signal groups, of the first signaling unit.

The driving function for automated longitudinal guidance of the vehicle can then also be operated on the first signaling unit as a function of the checking, in particular also as a function of the one or more attributes relating to a property of the first signaling unit. For example, operation of the driving function in the automatic mode may only be enabled if it is recognized that the first signaling unit is recorded in the map data. For an unlisted signaling unit, only manual mode may be enabled. On the other hand, if there is a road network and/or a junction with a relatively high level of complexity, only a manual mode of the driving function may still be enabled, even if a map attribute indicates that the first signaling unit has only one signal group. In this way, the robustness and safety of the driving function can be further increased.

According to a further aspect, a method for providing a driving function for automated longitudinal guidance of a vehicle on a signaling unit is described. The method includes the determination of environmental information relating to the environment of a first signaling unit ahead in the direction of travel of the vehicle. The method also includes operating the driving function for automated longitudinal guidance of the vehicle on the first signaling unit as a function of the environmental information.

According to a further aspect, a (road) motor vehicle (in particular a passenger car or a truck or a bus or a motorcycle) is described which comprises at least one of the vehicle guidance systems described in this document.

According to a further aspect, a software (SW) program is described. The SW program can be set up to be executed on a processor (e.g. on a control unit of a vehicle) and thereby to carry out at least one of the methods described in this document.

According to a further aspect, a storage medium is described. The storage medium can include a SW program which is set up to be executed on a processor and thereby to execute at least one of the methods described in this document.

In the context of the document, the term "automated driving" can be understood as driving with automated longitudinal or lateral guidance or autonomous driving with automated longitudinal and lateral guidance. Automated driving can be, for example, driving on the freeway for a longer period of time or driving for a limited time as part of parking or manoeuvring. The term "car Automated driving" includes automated driving with any degree of automation. Exemplary degrees of automation are assisted, partially automated, highly automated or fully automated driving. These degrees of automation were defined by the Federal Highway Research Institute (BASt) (see BASt publication "Research compact", issue 11/2012). With assisted driving, the driver constantly performs longitudinal or lateral guidance, while the system takes over the other function within certain limits. With semi-automated driving (TAF), the system takes over longitudinal and lateral guidance for a certain period of time and/or in specific situations, whereby the driver has to constantly monitor the system, as with assisted driving. With highly automated driving (HAD), the system takes over longitudinal and lateral guidance for a certain period of time without the driver having to constantly monitor the system; however, the driver must be able to take control of the vehicle within a certain period of time. With fully automated driving (VAF), the system can automatically handle driving in all situations for a specific application; a driver is no longer required for this application. The four levels of automation mentioned above correspond to SAE levels 1 to 4 of the SAE J3016 standard (SAE - Society of Automotive Engineering). For example, highly automated driving (HAF) corresponds to level 3 of the SAE J3016 standard. Furthermore, SAE J3016 also provides SAE Level 5 as the highest degree of automation, which is not included in the BASt definition. SAE Level 5 corresponds to driverless driving, in which the system can automatically handle all situations like a human driver throughout the journey; a driver is generally no longer required. The aspects described in this document relate in particular to a driving function or a driver assistance function that is designed according to SAE Level 2.

It should be noted that the methods, devices and systems described in this document can be used both alone and in combination with other methods, devices and systems described in this document. Furthermore, any aspects of the methods, devices and systems described in this document can be combined with one another in a variety of ways. In particular, the features of the claims can be combined with one another in many different ways.

• 1 beispielhafte Komponenten eines Fahrzeugs;
• 2a eine beispielhafte Lichtsignalanlage;
• 2b ein beispielhaftes Verkehrszeichen;
• 3 eine beispielhafte Verkehrssituation;
• 4 eine beispielhafte Benutzerschnittstelle; und
• 5a bis 5j sowie 6a bis 6e Ablaufdiagramme von beispielhaften Verfahren zur Bereitstellung einer Fahrfunktion zur automatisierten Längsführung eines Fahrzeugs an einer Signalisierungseinheit.

The invention is described in more detail below using exemplary embodiments. show it

• 1 exemplary components of a vehicle;
• 2a an exemplary traffic light system;
• 2 B an example road sign;
• 3 an exemplary traffic situation;
• 4 an example user interface; and
• 5a until 5y such as 6a until 6e Flowcharts of exemplary methods for providing a driving function for automated longitudinal guidance of a vehicle on a signaling unit.

As explained at the outset, the present document deals with increasing the reliability, availability and/or comfort of a driving function, in particular a driver assistance system, of a vehicle in connection with a signaling unit at a junction of the lane or road traveled by the vehicle with a other traffic route.

1 shows exemplary components of a vehicle 100. The vehicle 100 includes one or more environment sensors 103 (e.g. one or more image cameras, one or more radar sensors, one or more lidar sensors, one or more ultrasonic sensors, etc.) that are set up, environment data in relation to to detect an area surrounding vehicle 100 (in particular in relation to the area in front of vehicle 100 in the direction of travel). Furthermore, vehicle 100 includes one or more actuators 102 that are set up to act on the longitudinal and/or lateral guidance of vehicle 100 . Exemplary actuators 102 are: a brake system, a drive motor, a steering system, etc.

The control unit 101 can be set up to provide a driving function, in particular a driver assistance function, based on the sensor data of the one or more surroundings sensors 103 (ie based on the surroundings data). For example, an obstacle on the travel trajectory of vehicle 100 can be detected on the basis of the sensor data. The control unit 101 can then control one or more actuators 102 (e.g. the brake system) in order to automatically decelerate the vehicle 100 and thereby prevent the vehicle 100 from colliding with the obstacle.

In particular, as part of the automated longitudinal guidance of a vehicle 100, in addition to a vehicle in front, one or more signaling units (eg a traffic light system and/or a traffic sign) on the lane or road traveled by vehicle 100 can be taken into account. In particular, the status of a light signal or traffic light system can be taken into account, so that the vehicle 100 automatically switches to one for its own (planned) The red traffic light relevant to the direction of travel causes a delay up to the stop line of the traffic light and/or accelerates (possibly again) at a green traffic light.

Light signal systems can be designed very heterogeneously in different countries and can also be of different complexity with regard to the direction of travel light signal assignment. Thus, different directions of travel can be controlled by a first group of signals or by a group of signals, and another direction can be controlled by another group of signals. The repeating signals of a signal group can also be geographically located at different points of an intersection. It can therefore be difficult for a control unit 101 (also referred to as a vehicle guidance system in this document) to recognize on the basis of the sensor data which one or more signals of a traffic signal system at an intersection are relevant for the planned direction of travel of the vehicle 100 and which are not (in particular if the vehicle 100 is still relatively far away from the traffic signal system).

2a shows an exemplary traffic light system 200. The in 2a The traffic signal system 200 shown has four different signal transmitters 201, which are arranged at different positions on an access road to an intersection. The left signal generator 201 has an arrow 202 pointing to the left, thus indicating that this signal generator 201 applies to people turning left. The two middle signal transmitters 201 have an arrow 202 pointing upwards (or no arrow 202) and thus indicate that these two signal transmitters 201 apply to driving straight ahead. The individual light signals of these two signal transmitters 201 form signal groups. Furthermore, the right-hand signal generator 201 has an arrow 202 pointing to the right, and thus indicates that this signal generator 201 applies to people turning right.

• • die Anzahl von Signalgebern 201 und/oder von Signalgruppen;
• • die Positionen der ein oder mehreren Signalgeber 201; und/oder
• • die Zuordnung eines Signalgebers 201 zu einer möglichen Fahrtrichtung über eine Kreuzung.

In the 2a The traffic signal system 200 shown is just one example of many different possible configurations of a traffic signal system 200. A traffic signal system 200 can have a relatively large number of different characteristics of features. Exemplary characteristics are

• • the number of signal generators 201 and/or signal groups;
• • the positions of the one or more signal generators 201; and or
• • the assignment of a signal generator 201 to a possible direction of travel across an intersection.

2 B shows an exemplary stop sign as a traffic sign 210, through which the right of way at a traffic junction, in particular at an intersection, is regulated. The control unit 101 of the vehicle 100 can be set up, based on the sensor data of the one or more surroundings sensors 103 (ie based on the surroundings data) and/or on the basis of digital map information (ie map data), a traffic sign 210 relevant to the right of way for the vehicle 100 on the road or lane traveled by vehicle 100.

3 shows an example of a vehicle 100 that is moving on a roadway towards a signaling unit 200, 210 (in particular towards a traffic signal system 200 and/or towards a traffic sign 210). The one or more surroundings sensors 103 of the vehicle 100 can be set up to capture sensor data (in particular image data) in relation to the signaling unit 200, 210. The sensor data can then be analyzed (for example using an image analysis algorithm) in order to determine characteristics of one or more features of the signaling unit 200, 210. In particular, it can be determined on the basis of the sensor data whether the signaling unit 200, 210 is a traffic light system 200 or a traffic sign 210. Furthermore, it can be determined which signal generator 201 of the light signal system 200 is relevant for the (planned) direction of travel of the vehicle 100 . Furthermore, the (signaling) status of the relevant signal generator 201 (eg the color, for example red, yellow or green) can be determined.

The quality and/or the reliability with which the characteristics of a feature of a signaling unit 200, 210 can be determined on the basis of the environmental data typically depend on the distance 311 of the vehicle 100 from the signaling unit 200, 210. Furthermore, current weather conditions also typically have a significant influence on the quality and/or reliability of the determined characteristic of a feature. In addition, the quality and/or reliability can be different for different features.

The vehicle 100 may have a storage unit 104 on which digital map information (ie map data) relating to the road network traveled by the vehicle 100 is stored. The map data can display manifestations of one or more features of one or more signaling units 200, 210 in the road network as attributes. In particular, the map data for a traffic light system 200 can assign the one or more signal transmitters 201 or signal groups 201 to different possible journeys show directions. In other words, the map data can indicate which signal transmitter or which signal group 201 is responsible for releasing which direction of travel. The map data can optionally be received at the vehicle 100 by means of a communication unit 105 of the vehicle 100 via a wireless communication connection (eg a WLAN or an LTE communication connection).

The control unit 101 of the vehicle 100 can be set up (e.g. based on the current position of the vehicle 100 and based on a planned driving route and/or based on the environmental data of the one or more environmental sensors 103) to determine that the vehicle 100 is approaching an upcoming Signaling unit 200, 210 closes. Furthermore, the control unit 101 can determine the characteristics of one or more features of the signaling unit 200, 210 ahead on the basis of the (stored and/or received) map data. In particular, it can be determined on the basis of the map data which signal generator or which signal group 201 of a traffic signal system 200 is assigned to the current or planned direction of travel of the vehicle 100 . In addition, the current status of the assigned signal generator or the assigned signal group 201 can be determined on the basis of the environmental data. Based on this, an automated driving function (e.g. automated longitudinal guidance of vehicle 100) can then be carried out in a reliable and convenient manner. In particular, by considering the map data, the characteristics of the one or more relevant features of a signaling unit 200 can already be determined at a relatively large distance 311 of the vehicle 100 from the signaling unit 200, which can increase the reliability, availability and comfort of an automated driving function .

A vehicle 100 can be set up to use information relating to a signaling unit 200, 210 that is or has been passed by the vehicle 100 to create and/or supplement the map data. The map data can be created and/or supplemented locally by the vehicle 100 and/or centrally by a central unit 300 (e.g. by a backend server) (see FIG 3 ). In the immediate vicinity of a signaling unit 200, 210, the one or more environment sensors 103 of a vehicle 100 can typically capture environment data that precisely indicate the characteristics of one or more features of the signaling unit 200, 210. In particular, the association between signal transmitters or signal groups 201 and possible directions of travel can be determined in a precise and reliable manner in the immediate vicinity on the basis of the recorded surroundings data.

The vehicle 100 can be set up to transmit the determined information (e.g. the environmental data and/or the determined characteristics of the one or more characteristics) to the central unit 300 via a wireless communication link 301 (in connection with an identifier for the respective signaling unit 200, 210 , for example in connection with the position of the signaling unit 200, 210). Based on the information provided, central unit 300 can then create and/or update map data from a large number of vehicles 100, which map data indicates the characteristics of one or more features as attributes for a large number of different signaling units 200, 210. The map data can then be provided to the individual vehicles 100 to (as set out above) support the operation of an automated driving function.

The vehicle 100 typically includes a user interface 107 with one or more controls and/or with one or more output elements. 4 shows an exemplary user interface 107 with a display unit 400, in particular with a screen, for outputting visual information. A suggestion for the automatic driving of the vehicle 100 can be output to a signaling unit 200, 210 ahead on the display unit 400, for example via a display element 401. Alternatively or additionally, a display element 402 can be provided, via which the status of the driving function (eg active or inactive) is displayed.

Alternatively or additionally, the user interface 107 can include at least one loudspeaker 420 as an output element, via which an acoustic output (e.g. a warning tone) can be output to the driver of the vehicle 100 .

Furthermore, the user interface 107 can include one or more operating elements 411, 412, 413, which enable the driver of the vehicle 100 to activate and/or parameterize the driving function. An exemplary operating element is a rocker switch 411, which enables the driver to set a set speed (ie a target driving speed) for vehicle 100, in particular to increase or reduce it. Another exemplary control element is a set control element 412, which enables the driver to set the current driving speed as the set speed and/or to accept a suggestion for the automatic driving of vehicle 100 at a signaling unit 200, 210 ahead. Furthermore, the user interface 107 can include a resume control element 413 sen that allows the driver, for example, to reactivate the driving function with a previously set speed.

The control unit 101 of the vehicle 100 can be designed to provide automated longitudinal guidance of the vehicle 100 in urban areas. This driving function can be referred to as Urban Cruise Control (UCC) driving function, for example. The driving function can be provided in an automatic mode (aUCC) and/or in a manual mode (mUCC). In this case, it may be possible for the driver to specify via the user interface 107 whether the driving function is to be operated in the automatic or in the manual mode.

The control unit 101 of the vehicle 100 can be set up, based on the environmental data of the one or more environmental sensors 103 and/or on the basis of the map data (in connection with the position data of the position sensor 106 of the vehicle 100), a signaling unit 200 lying ahead on the route of the vehicle 100 , 210 to detect. In the manual mode of the UCC driving function, a suggestion or an inquiry can then be output via the user interface 107 as to whether the signaling unit 200, 210 should be taken into account in the automated longitudinal guidance of the vehicle 100 or not. The driver of the vehicle 100 can then accept or reject or ignore the suggestion, e.g. by actuating the set operating element 412 . On the other hand, in the automatic mode of the UCC driving function, the recognized signaling unit 200, 210 can be taken into account automatically (i.e. without the need for feedback from the driver) in the automated longitudinal guidance of the vehicle 100.

If the recognized signaling unit 200, 210 is taken into account during the automated longitudinal guidance of the vehicle 100, then (depending on the type and/or (signaling) status of the signaling unit 200, 210) an automatic deceleration can be effected in order to bring the vehicle 100 (e.g. in the case of a red traffic light or a stop sign) automatically to a standstill. Furthermore (e.g. after a change in the (signaling) state of the signaling unit 200, 210, for example after a change to green), the vehicle 100 can be started up automatically. Vehicle 100 can then be automatically accelerated again to the set speed (taking into account a specified minimum or target distance from a vehicle in front).

The UCC driving function can thus enable the driver of a vehicle 100 to also use the ACC driving function on a road with one or more signaling units 200, 210 (without deactivating and activating the ACC function on the individual signaling units 200, 210 having to reactivate).

The control unit 101 can be set up to determine on the basis of the surroundings data and/or on the basis of the map data whether or not a signaling unit 200, 210 lying ahead can be taken into account in the automated longitudinal guidance. If it is determined that the signaling unit 200, 210 ahead cannot be taken into account in the automated longitudinal guidance, an output (e.g. an optical output via a display unit 400, 402) to the driver of the vehicle 100 can be effected in order to inform the driver of the vehicle 100 to inform that the signaling unit 200, 210 ahead cannot be taken into account in the automated longitudinal guidance. This display may be referred to as an "unavailability display". It is then the task of the driver of the vehicle 100 to decelerate the vehicle 100 in front of the signaling unit 200, 210 if necessary (e.g. because the traffic light switches to red or because the signaling unit 200, 210 is a stop sign). .

Furthermore, the control unit 101 can be set up to recognize during the operation of the UCC driving function that the vehicle 100 can no longer be automatically guided longitudinally (e.g. because the driver has manually intervened in the longitudinal guidance of the vehicle 100). In this case, a takeover request (TOR) may be issued to the driver of the vehicle 100 to prompt the driver to manually take over the longitudinal guidance of the vehicle 100 .

The vehicle 100 may include one or more driver sensors 108 configured to collect sensor data related to the driver of the vehicle 100 (this sensor data is also referred to as driver data in this document). An example driver sensor 108 is a camera pointed at the driver's position of the vehicle 100 . The control unit 101 can be set up to determine, on the basis of the driver data, whether or not the driver pays sufficient attention to the driving task or to the monitoring of the driving function. As an alternative or in addition, the driver's degree of attentiveness in relation to the driving task or in relation to the monitoring of the driving function can be determined. Furthermore, the control unit 101 can be set up to operate the driving function, in particular the UCC driving function, depending on the ascertained degree of attentiveness of the driver. So the comfort and the safety of the driving function can be further increased.

• • ob die Signalisierungseinheit 200, 210 auf Basis der Kartendaten und/oder auf Basis der Umfelddaten erkannt wurde;
• • an bzw. ab welchem Erkennungszeitpunkt die Signalisierungseinheit 200, 210 auf Basis der Kartendaten bzw. auf Basis der Umfelddaten erkannt wurde; und/oder
• • an welchem Konfigurationszeitpunkt eine Konfigurationsänderung der UCC-Fahrfunktion (z.B. zwischen dem automatischen Modus und dem manuellen Modus) relativ zu dem Erkennungszeitpunkt der Signalisierungseinheit 200, 210 vorgenommen wurde.

As already explained above, control unit 101 can be set up to recognize or detect a signaling unit 200, 210 ahead on the basis of map data (in connection with position data relating to the current position of vehicle 100). Furthermore, the control unit 101 can be set up to recognize or to detect the upcoming signaling unit 200, 210 on the basis of environment data from one or more environment sensors 103 (in particular from a camera) of the vehicle 100. The automated (UCC) driving function can be operated on the recognized signaling unit 200, 210 depending on

• • whether the signaling unit 200, 210 was recognized on the basis of the map data and/or on the basis of the environment data;
• • at or from which recognition time the signaling unit 200, 210 was recognized on the basis of the map data or on the basis of the environment data; and or
• • at which configuration time a configuration change of the UCC driving function (eg between the automatic mode and the manual mode) was made relative to the detection time of the signaling unit 200, 210.

In particular, the control unit 101 can be set up to inform the driver about the unavailability of the automated support of the longitudinal guidance on the recognized signaling unit 200, 210 (e.g. by an optical, a haptic and/or an acoustic output via the user interface 107) if the signaling unit 200, 210 was only recognized on the basis of the environment data, but not on the basis of the map data.

The control unit 101 can thus be set up to only offer and/or provide automated support for the longitudinal guidance on the recognized signaling unit 200, 210 if the signaling unit 200, 210 is recognized not only on the basis of surroundings data but also on the basis of map data. If the automated support of the longitudinal guidance cannot be provided at the recognized signaling unit 200, 210, the driver can be informed via the user interface 107 about the unavailability of the automated support (by an unavailability output). This enables safe operation of the UCC driving function. In particular, it is possible to reliably prevent the stop line of a recognized signaling unit 200, 210 from being crossed in an impermissible manner because the driver incorrectly assumes that the recognized signaling unit 200, 210 will assist him with longitudinal guidance.

In a signaling unit 200, in particular in a light signal system 200, with a plurality of signal groups 201, it is often not possible to reliably identify which traffic light color is relevant for vehicle 100. A signal group 201 can include all of the traffic lights or signal transmitters of a traffic signal system 200 that have been switched to the same state. At an intersection with separately switched traffic lights for people turning left on the one hand and for driving straight ahead or turning right on the other, there is therefore an access road with two different signal groups 201 .

The control unit 101 can be set up to provide the automatic mode of the UCC driving function, i.e. aUCC, if necessary only at a traffic signal system 200 with a single signal group 201. The manual mode of the UCC driving function, i.e. mUCC, can be provided on a traffic light system 200 with several different signal groups 201. In this case, the driver receives a suggestion via user interface 107 for assistance with longitudinal guidance, which the driver can then accept, if necessary, by actuating an operating element 412 of user interface 107 (which e.g. leads to automated braking at a red signal group 201).

The number of signal groups 201 as a map attribute in the map data ( i.e. in the digital map information). Since this map data can be incorrect in individual cases or the number of signal groups 201 can change due to conversion measures, a situation can arise in which the UCC driving function (due to the map data) with a signaling unit 200, 210 ahead of a traffic signal system 200 with only of a signal group 201, but two different traffic light colors are recognized on the basis of the environment data.

If the map attributes related to a signaling unit 200, 210 differ from what is recognized based on the environment data captured by the vehicle 100, this may be because the map attributes are incorrect or it may be because the environment data is incorrect interpreted (false positive). A false positive of the environmental data is often only present for a relatively short period of time.

In order to be able to rule out a false positive, the control unit 101 can be set up, in response to a detected deviation or in response to a detected contradiction between surroundings data and map data, to repeatedly check the situation before a vehicle reaction takes place (in particular before a non-availability output causes or before the drive function is operated in manual mode). The repeated checking can possibly result in the contradiction being resolved, and thus an improved reaction of the driving function to the situation is possible. This delayed reaction can be delayed up to a decision time or up to a decision position which is as close as possible to the recognized signaling unit 200, 210, but which still leaves enough time to be automated even after the delayed reaction and/or to be able to react manually to the signaling unit 200, 210 in a secure manner.

If the UCC driving function when approaching a traffic signal system 200, which according to the map data only has one signal group 201, detects several different traffic light colors based on the surrounding data, the decision as to whether it is possible to brake manually or automatically to the traffic signal system 200 (i.e. whether mUCC or aUCC is performed) can be delayed. This is possible if the signal group deviation is detected so early that it is still possible to react reliably to the traffic signal system 200 even after a delayed reaction. In this case, if a signal group deviation is detected, there is initially no reaction from the driving function to the traffic signal system 200. Only at the decision time or at the decision position at which or at which at the latest an mUCC offer would have to be issued to the driver in order to both To comply with the minimum output duration of the offer and the necessary braking distance of vehicle 100 under the specification of a maximum comfort deceleration, a decision can then be made as to whether the driving function is operated in automatic mode or in manual mode.

At the time of the decision, an mUCC offer is preferably issued if the discrepancy or contradiction between the environmental data and the map data is still present. On the other hand, if no deviation is recognizable at the decision point in time, a (temporary) false positive of the environment data can be assumed and the driving function can regulate automatically (in aUCC mode) to the traffic signal system 200 .

The control unit 101 can thus be set up to determine a decision time or a decision position in front of a recognized signaling unit 200, 210 at which or at the latest a decision must be made as to whether the UCC driving function is to be operated in the automatic mode or in the manual mode will. If there is a contradiction between the environment data-based detection of the signaling unit 200, 210 and the map data-based detection of the signaling unit 200, 210 at the decision time or at the decision position, the UCC driving function can be operated in manual mode. If there is no contradiction, the UCC driving function can be operated in automatic mode. In this way, the comfort and safety of the UCC driving function can be increased.

The control unit 101 can thus be set up to decide in a flexible manner whether the UCC driving function can be operated in the automatic mode or in the manual mode for a recognized signaling unit 200, 210. The UCC driving function can thus be operated in mixed operation with automatically performed automated braking and manual offers to perform automated braking. In particular, depending on the complexity of a junction, such as an intersection, automated braking can be carried out automatically, or the need for driver confirmation can be recognized before the automated braking is carried out.

In other words, the control unit 101 can be set up to decide flexibly based on the map data and based on the environment data whether the UCC function is to be operated on a recognized signaling unit 200, 210 in automatic mode or in manual mode. In particular, a decision can be made as to whether or not a recognized node can be reliably controlled in an automated manner and/or whether the relevant signal group 201 for vehicle 100 can be determined or not.

If the UCC function is operated in automatic mode and the signal group 201 relevant to vehicle 100 has a color relevant to braking, automated braking can be initiated automatically (without confirmation by the driver of vehicle 100). The automatic initiation of the automated braking can be communicated to the driver via the user interface 107, for example via the instrument cluster.

If the intersection cannot be navigated safely, the UCC function can be operated in manual mode be used, and an offer to carry out automated braking can be output to the driver via the user interface 107, in particular via the instrument cluster (possibly optically). In particular, the traffic light color which vehicle 100 considers relevant can be displayed to the driver. Furthermore, the driver can be shown which operating element 412 can be used to accept the offer. The driver can then, if necessary, accept the offer (for example by actuating the operating element 412), and automated braking can then, if necessary, be initiated and/or carried out in relation to the recognized signaling unit 200, 210. If the offer is not accepted, the vehicle 100 can, if necessary, be automatically guided longitudinally past the intersection (without the recognized signaling unit 200, 210 being taken into account).

Due to the flexible operation of the UCC driving function in automatic mode or in manual mode (depending on the complexity of the recognized signaling units 200, 210), the comfort, safety and availability of the UCC driving function can be increased.

The driver of the vehicle 100 may be allowed to configure the UCC driving function via the user interface 107 . The driver can, for example, specify whether the UCC driving function (if possible) should be operated in automatic mode (aUCC) or whether the UCC driving function should only be operated in manual mode (mUCC). The configuration or the change in configuration can, for example, take place at a configuration point in time or at a configuration position (within the roadway or road network).

It can happen that a driving function, in particular the UCC driving function, is already being operated in relation to a signaling unit 200, 210 at the time of configuration or at the configuration position. The control unit 101 can be set up to only take into account the change in the configuration of the driving function caused at the configuration time or at the configuration position during the operation of the driving function if the vehicle 100 is in a state in which the configuration changes do not cause an immediate vehicle reaction .

As part of the UCC driving function, a configuration change via the user interface 107, which could cancel active braking on a specific signaling unit 200, 210, can only be accepted when the active braking has ended or when the active braking is affected by other influences ( e.g. due to a termination by the driver). The configuration change thus only affects the next driving situation with a signaling unit 200, 210. So if the UCC driving function is deactivated (e.g. by the passenger) during active traffic light braking for a traffic light 200, the vehicle 100 continues to brake until it comes to a standstill in front of the traffic light 200. The driving function is only actually deactivated after the braking.

In another example in the context of the UCC driving function, it may be possible to switch from automatic takeover (aUCC) to manual takeover (mUCC) of a recognized signaling unit 200, 210, while the function is already controlling a specific signaling unit 200, 210. The change is then preferably only carried out after the conclusion of the regulation that is already running, so that a manual offer is only output for a subsequently recognized signaling unit 200, 210.

The control unit 101 can thus be set up to check whether a signaling unit 200, 210 for the UCC driving function has already been recognized at the configuration time or at the configuration position of a configuration change of the UCC driving function and/or automated longitudinal guidance in relation to a recognized signaling unit 200, 210 takes place. If this is the case, then the configuration change may only be taken into account for the immediately following signaling unit 200, 210 (and not for the signaling unit 200, 210 that has already been recognized and/or taken into account). In particular, the driving function can only be deactivated after the automated longitudinal guidance has been completed in relation to the signaling unit 200, 210 that has already been recognized. A particularly safe operation of the UCC driving function can be brought about in this way.

As already explained above, the control unit 101 can be set up to detect a signaling unit 200, 210 located in front of the vehicle 100 in the direction of travel on the basis of the surroundings data (and possibly on the basis of the map data). Furthermore, the color of a signal group 201 of the signaling unit 200, 210 can be determined on the basis of the environmental data.

It can happen (e.g. if the color of a signal group 201 changes from green to yellow relatively late) that automated and/or manual braking can no longer be carried out for a detected signaling unit 200, 210 (with a specific, specified maximum delay). In such a case, an unavailability output could be issued to the driver of vehicle 100 to indicate to the driver that no automated braking is required the detected signaling unit 200, 210 will take place. However, the output of a non-availability output, in particular a non-availability display, would typically not make sense in such a situation, since the driver of vehicle 100 can no longer or should no longer perform manual braking.

• • ob die Zeitdauer bis zum Erreichen der Signalisierungseinheit 200, 210 einem bestimmten Zeitdauer-Schwellenwert entspricht oder diesen unterschreitet; und/oder
• • ob der Abstand 311 bis zum Erreichen der Signalisierungseinheit 200, 210 einem bestimmten Abstands-Schwellenwert entspricht oder diesen unterschreitet.

Control unit 101 can be set up to suppress an unavailability output if it is only recognized shortly before reaching signaling unit 200, 210 that signaling unit 200, 210 cannot be taken into account in the automated longitudinal guidance of vehicle 100. In particular, the control unit 101 can be set up to check at a point in time or at a position at which the non-availability of the support for a signaling unit 200, 210 is detected

• • whether the time it takes to reach the signaling unit 200, 210 corresponds to or falls below a specific time threshold value; and or
• • whether the distance 311 until reaching the signaling unit 200, 210 corresponds to a specific distance threshold value or falls below this.

The duration threshold and/or the distance threshold can each be speed-dependent or speed-independent. The duration threshold and/or the distance threshold may be set such that for durations longer than the duration threshold and/or for distances greater than the distance threshold, manual braking of the vehicle 100 by the driver to stop the vehicle continues 100 on the recognized signaling unit 200, 210 is possible and/or useful. For example, a maximum possible deceleration of the vehicle 100 and/or a predefined reaction time of the driver can be taken into account.

• • dass die Zeitdauer bis zum Erreichen der Signalisierungseinheit 200, 210 dem bestimmten Zeitdauer-Schwellenwert entspricht oder diesen unterschreitet; und/oder
• • dass der Abstand 311 bis zum Erreichen der Signalisierungseinheit 200, 210 dem bestimmten Abstands-Schwellenwert entspricht oder diesen unterschreitet.

Andererseits kann die Ausgabe der Nichtverfügbarkeitsausgabe bewirkt werden.The control unit 101 may be set up to prevent the output of an unavailability output if it is determined

• • that the length of time until the signaling unit 200, 210 is reached corresponds to or falls below the specific time threshold value; and or
• • that the distance 311 until reaching the signaling unit 200, 210 corresponds to or falls below the determined distance threshold value.

On the other hand, the unavailability output can be effected.

The control unit 101 can thus be set up to ensure that, as a result of false detection and/or a traffic light that turns yellow late in an area that is not relevant for the driver until traffic light 200 is reached (in particular because manual braking is no longer useful) no unavailability display (NVA) is issued, since the output of such an NVA would represent an additional disruptive factor for the driver.

In particular, it can be brought about that no NVA is output at a specific distance x 311 in [m] and/or at a specific time interval in [s] before the traffic light 200 is reached. The minimum distance x from the stopping position of the traffic light 200 can be independent of the speed and can possibly represent a lower limit. Below this distance value, the NVA may not display anything. The time criterion can be speed-dependent. This criterion can then cause the non-issue of the NVA, particularly in the case of relatively high speed ranges. By suppressing the output of the NVA, the comfort of the driving function for the driver of the vehicle 100 can be increased.

As already explained above, the UCC driving function can be operated in a manual mode, in which the driver of the vehicle 100 is given an offer of assistance with longitudinal guidance at a recognized signaling unit 200, 210. The driver of the vehicle 100 then has the opportunity to accept the offer (e.g. by actuating the set control 212). If the offer is accepted, automated braking, for example, can be carried out on the recognized signaling unit 200, 210 if required.

It can happen, e.g. when vehicle 100 is driving on a straight lane, that the next signaling unit 200, 210 ahead is already at a relatively large (chronological and/or spatial) distance 311 before reaching signaling unit 200, 210 (based on the environment data). is detected. At this moment, the recognized signaling unit 200, 210 may still be irrelevant for the longitudinal guidance of the vehicle 100 and/or for the driver of the vehicle 100. An output to the driver of vehicle 100, e.g. in relation to an offer to support the automated longitudinal guidance at the recognized signaling unit 200, 210, could be perceived by the driver as disruptive and/or irritating.

It can also happen that the signaling unit 200, 210 is covered at a later point in time and is therefore no longer recognized will. This could lead to a withdrawal of the offer to the driver, thus confusing the driver.

The control unit 101 can be set up to determine whether the (spatial and/or temporal) distance 311 to a recognized signaling unit 200, 210 is equal to or greater than an output threshold value. Furthermore, the control unit 101 can be set up to only bring about an output in relation to the recognized signaling unit 200, 210 (e.g. an offer to take the recognized signaling unit 200, 210 into account in the automated longitudinal guidance) when the (spatial and/or temporal) Distance 311 to the recognized signaling unit 200, 210 is equal to or less than the output threshold.

The control unit 101 can thus be set up to take into account a required minimum output distance to a recognized signaling unit 200, 210. A missing condition in relation to a minimum output distance could lead to irritation for the driver, since implausible changes in relation to an offer to support the automated longitudinal guidance on the recognized signaling unit 200 appear on the screen 400 (e.g. in the instrument cluster and/or in the head-up display). , 210 could be displayed, although the signaling unit 200, 210 (e.g. a red traffic light) is not (yet) relevant for the driver. Such changes could be caused, for example, by uncertainties in camera recognition (due to the relatively large distance).

The control unit 101 can be set up to only issue an offer in relation to a signaling unit 200, 210 if the distance to the signaling unit 200, 210 is less than a certain one. There may be no display if vehicle 100 is in the x. Row (with x> 1) before the signaling unit 200, 210 is. Incorrect and/or implausible displays can thus be eliminated. The control unit 101 can thus be set up to suppress the output of an offer as long as the predefined output distance 311 from the signaling unit 200, 210 is not undershot. In this way, the comfort for the user can be increased.

The control unit 101 can be set up to search sequentially after the support for the longitudinal guidance of the vehicle 100 at a first signaling unit 200, 210 for a (directly) following second signaling unit 200, 210, which can or should be taken into account in the longitudinal guidance of the vehicle 100 . In particular, as part of the mUCC driving function, after the braking process has been completed, a suggestion for a subsequent second signaling unit 200, 210 to be taken into account can be output to a first signaling unit 200, 210. Alternatively, as part of the aUCC driving function, after completion of the braking process at a first signaling unit 200, 210, the subsequent second signaling unit 200, 210 can be automatically taken into account (and possibly associated automated braking).

The detection of a subsequent second signaling unit 200, 210 can be impaired, in particular when approaching a traffic light (i.e. at a first signaling unit 200, 210) (e.g. because some of the surroundings data still show information relating to the first signaling unit 200, 210). This can lead to behavior of the driving function that is implausible for the driver of vehicle 100 .

• • solange die Zeitdauer kleiner als oder gleich wie ein Zeitdauer-Schwellenwert ist; und/oder
• • solange der räumliche Abstand des Fahrzeugs 100 von der ersten Signalisierungseinheit 200, 210 kleiner als oder gleich wie ein Abstands-Schwellenwert ist; und/oder
• • solange die Fahrgeschwindigkeit des Fahrzeugs 100 kleiner als oder gleich wie ein Geschwindigkeits-Schwellenwert ist.

The control unit 101 can be set up to determine the length of time and/or the spatial distance since the vehicle 100 started off at the first signaling unit 200, 210. The output of an offer for the consideration of a subsequent second signaling unit 200, 210 and/or the automatic consideration of a subsequent second signaling unit 200, 210 can be suppressed,

• • as long as the duration is less than or equal to a duration threshold; and or
• • as long as the spatial distance of the vehicle 100 from the first signaling unit 200, 210 is less than or equal to a distance threshold value; and or
• • as long as the travel speed of the vehicle 100 is less than or equal to a speed threshold.

The control unit 101 can thus be set up to suppress all manual and/or automatic offers for the consideration of signaling units 200, 210 for a defined period of time after the vehicle 100 has started off. Alternatively or additionally, allowing a manual and/or automatic offer may require a minimum speed of vehicle 100 to be exceeded.

In particular, after vehicle 100 has started, a blocking timer can be started, which suppresses all offers up to a defined time from the start of the “driving” state. Furthermore, no offers may be issued up to a defined speed. In this way, the comfort of the driving function can be further increased.

As discussed above, the vehicle 100 may include one or more driver sensors 108 configured to receive driver data (ie Sensor data) related to the driver of the vehicle 100 to capture. The UCC driving function can be operated depending on the driver data. In particular, information can be output to the driver of vehicle 100 as a function of the driver data or possibly prevented.

The control unit 101 of the vehicle 100 can be set up to determine on the basis of the driver data whether or not the driver is paying sufficient attention to the driving task or to the monitoring of the driving function. Furthermore, the control unit 101 can be set up to supplement an unavailability display (NVA) displayed on the screen 400 of the user interface 107 by outputting a visual and/or haptic signal if it is determined that the driver is not sufficiently attentive. In this way, the comfort and safety of the UCC driving function can be increased.

The unavailability display can be issued, for example, if it is recognized that the driving function (e.g. due to the late detection of a traffic light, due to the traffic light changing to yellow late, due to a covered camera 103, etc.) can no longer react to the traffic light in good time (and therefore automated braking at traffic lights is not available). The NVA can, for example, be displayed in the instrument cluster and/or in the head-up display. If the driver is not paying attention when the NVA is issued, this could lead to the driver overlooking the visual information (and continuing to assume that the traffic light 200 is taken into account in the automated longitudinal guidance).

In addition to the visual indication, an acoustic signal can therefore be output to the driver identified as being inattentive, for example, in order to request the driver to pay attention. Alternatively or additionally, a steering wheel vibration and/or an activation of light strips on the steering wheel can be brought about. This ensures that the traffic light for which NVA is displayed is not overlooked by the driver.

Using the sensor data from an interior camera 108, the state of the driver can be determined using a driver model. If it is detected that the driver is inattentive, a tone can be emitted in addition to the unavailability display. Alternatively or in addition, an additional haptic or further visual feedback can be effected.

During the operation of a driving function, in particular a driver assistance function, the driving behavior of vehicle 100 may change. For example, a braking process that has already been initiated can be automatically aborted by the driving function, e.g. in order to accelerate vehicle 100 again. This can occur, for example, as part of the UCC driving function, if signal group 201 changes to green during automated braking on a traffic signal system 200 with a red signal group 201. The change in the driving behavior of vehicle 100 brought about by the driving function can be perceived as unsettling and/or uncomfortable for the driver of vehicle 100, particularly when the driver of vehicle 100 is not paying attention.

The control unit 101 can be set up to determine that the driving behavior of the vehicle 100 brought about by the driving function of the vehicle 100 has changed significantly at a specific change time or will change significantly. Furthermore, the control unit 101 can be set up to determine on the basis of the driver data from the one or more driver sensors 108 that the driver of the vehicle 100 is not paying attention to the driving task at the time of the change. In response, information related to the change in driving behavior may be caused to be output to the driver of the vehicle 100 (e.g., via a visual and/or an audible output). In this way, the comfort for the driver of the vehicle 100 can be increased.

The UCC driving function is typically designed as a driving function according to SAE Level 2. With such a driving function, in particular with such a driver assistance system, the driver is only supported in the (longitudinal) guidance of vehicle 100 and must continue to be able to act himself at any time. The driving function can be designed such that in a situation where the driving function changes the driving behavior of the vehicle 100 in such a way that the driver has to react or at least should monitor the vehicle 100 with increased attention, information relating to the change in driving behavior is output.

The control unit 101 can thus be set up, if the driving function changes significantly, e.g. braking stops and accelerates back into free travel, to inform a driver who has been identified as being inattentive about the change visually and/or acoustically and/or haptically.

If the UCC driving function automatically brakes at a traffic light 200 and it switches from red to green during regulation, then the control unit 101 can cause the The UCC driving function interrupts the braking and switches to free driving or following driving (when there is a vehicle ahead), especially when the driver is recognized as being attentive via the interior camera 108 . If the driver is not recognized as being alert in this situation, the driver can be informed of the changed conditions acoustically and/or visually, for example via a gong. For safety reasons, braking can then be continued despite the green traffic light until the driver is recognized as alert again. In this way, the safety of the driving function can be further increased.

Another example within the UCC driving function is the unavailability display (NVA). If a red traffic light 200 is detected so late that braking is no longer (automatically) possible, taking into account the functional limits of the driving function, then the driving function typically does not initiate braking and instead displays an unavailability display to the driver. If the driver does not brake independently in this situation, a red traffic light 200 could be run over. For this reason, the driver's attention (in particular via the interior camera 108) can be checked (in particular at the same time) as the unavailability display is output. If the driver is detected as being inattentive, an acoustic gong can be emitted, which draws the driver's attention to the fact that the UCC driving function is not braking and that a driver reaction may be necessary. In this way, the safety and comfort of the driving function can be increased.

The control unit 101 of the vehicle 100 can be set up, as part of a driving function, in particular as part of the UCC driving function, automatically caused deceleration and/or acceleration, in particular the time profile of the deceleration and/or the acceleration, of the vehicle 100 as a function of the Adjust driver data, in particular depending on the detected degree of attention of the driver. In this way, the comfort and safety of the driving function can be increased.

Monitoring the driver's attention makes it possible to design the course of braking of vehicle 100 in such a way that the driver's attention is drawn to the start of an automated braking maneuver by the resulting vehicle movement. In this way it is possible to cause the driver of vehicle 100 to monitor the automated braking with an increased probability. For example, braking can be started with a jolt, causing a haptic signal to the driver (identified as inattentive) as an indication to pay attention to the driving task.

Alternatively or additionally, the time course of a deceleration and/or an acceleration of the vehicle 100 can depend on a set driving mode (e.g. sporty, comfort and/or energy-saving). For example, it may be possible (e.g. in a sport mode) to start the deceleration of the vehicle 100 at a later point in time and/or to carry it out with an increased deceleration value if the driver of the vehicle 100 is recognized as being alert. In this way, the comfort and safety of a driving function can be increased.

The control unit 101 can be set up (in particular on the basis of the environment data and/or on the basis of the map data) to determine the type of the signaling unit 200, 210 (from a predefined set of different types). Exemplary types are a traffic signal system 200 or a traffic sign 210. Alternatively or additionally, the control unit 101 can be set up (in particular on the basis of the environment data and/or on the basis of the map data) to predict duration information with regard to the duration that the vehicle 100 is expected to be at the signaling unit 200, 210 ahead must stop before the vehicle 100 can start moving again. It is thus possible (on the basis of the map data and/or the environment data) to determine stop information relating to the stop of vehicle 100 at the signaling unit 200, 210 ahead.

The automated deceleration of the vehicle 100 at the signaling unit 200, 210 ahead can then be effected depending on the duration information and/or depending on the type of the signaling unit 200, 210 (i.e. depending on the stop information). In particular, the time profile of the delay and/or the total duration of the delay process can be adjusted or specified depending on the duration information and/or depending on the type of signaling unit 200, 210 (i.e. depending on the hold information). For example, a relatively slow deceleration process can be selected at a traffic signal system 200 with a red signal group 201 (since vehicle 100 has to wait anyway until signal group 201 changes to green). On the other hand, a relatively quick deceleration process can be selected at a stop sign 210 since the vehicle 100 can continue driving immediately after stopping (if the traffic on the crossing traffic route allows it). The comfort of the driving function can be increased by adapting the deceleration curve.

As part of the UCC driving function, control is generally carried out until vehicle 100 comes to a standstill. As explained above, depending on the type of signaling unit 200, 210, a different delay curve can be used. In particular, the automated braking to a traffic light 200 can differ from the automated braking to a stop sign 210 (because the driver may be able to continue driving immediately after stopping at a stop sign 210).

Alternatively or additionally, the driving style, in particular the deceleration or the deceleration characteristics, of the vehicle 100 can be selected by the user of the vehicle 100 using the driving experience switch. At the driver's request, the driving function can adopt different deceleration profiles at traffic lights 200 and/or stop signs 210 using the driving experience switch (e.g. eco, comfort, sport, etc.). The different deceleration curves can be brought about by adjusting one or more parameters when planning the trajectory of vehicle 100 .

By adapting the delay curve of the UCC driving function to the type of signaling unit 200, 210, the comfort and safety of the driving function can be increased. In particular, an impairment of the following traffic, which could result, for example, if the deceleration in front of a stop sign 210 is too slow, can be avoided.

As part of the UCC driving function, a signaling unit 200, 210 ahead on the lane traveled by vehicle 100 can be displayed to the driver of vehicle 100 via user interface 107, in particular on screen 400, at which signaling unit 100 must stop. For example, a red light or stop sign icon may be displayed on screen 400 . As an alternative or in addition, an acoustic output in relation to the recognized signaling unit 200, 210 can be effected. Then, automatically (aUCC) or after confirmation by the driver (mUCC), an automated braking process of the vehicle 100 until it comes to a standstill can be effected at the signaling unit 200, 210, in particular up to the stop line of the signaling unit 200, 210.

The control unit 101 can be set up (on the basis of the recorded environmental data) to monitor the (signalling) state, in particular the color, of the signal group 201 of the signaling unit 200, 210 relevant to the vehicle 100, while the vehicle 100 is at the signaling unit 200, 210 stands. Furthermore, the control unit 101 can be set up to change the display in relation to the signaling unit 200, 210 or to delete it completely or withdraw it (and/or to cause an acoustic output) if a phase change in the signal group 201 from red to green is detected and/or as soon as the vehicle 100 has come to a standstill at the signaling unit 200, 210. In this way, the driver of vehicle 100 can be informed in an unambiguous manner that signaling unit 200, 210 is no longer relevant for the longitudinal guidance of vehicle 100. The display can be withdrawn in the automatic mode and/or in the manual mode of the UCC driving function.

Furthermore, it can be made possible for the driver of the vehicle 100 to start the vehicle 100 on the signaling unit 200, 210 (in particular after a phase change from red to green has been detected) via a control element 413 (e.g. via the resume button) of the user interface 107 . In particular, it can be made possible for the driver, by actuating operating element 413, to cause vehicle 100 to be accelerated again to the set set or target speed (taking into account a set target distance from a vehicle in front). Driving off at the signaling unit 200, 210 by actuating the (resume) operating element 413 can be enabled in the automatic mode and/or in the manual mode of the UCC driving function.

In addition, starting after the vehicle has come to a standstill can be effected on the signaling unit 200, 210 by actuating the accelerator pedal of the vehicle 100. However, this may lead to the UCC driving function being aborted. By starting via a control element 413 (in particular via a button) of the user interface 107, a comfortable continuation of the UCC driving function on a sequence of consecutive signaling units 200, 210 is thus made possible (in the automatic mode and/or in the manual mode of the UCC driving function).

In particular, the UCC driving function can be designed in such a way that when there is a (possibly manually confirmed) traffic light 200 (mUCC) after standstill and after a green change has been detected, the display in relation to the traffic light 200 is withdrawn. Furthermore, it can be made possible for the driver to move off using button 413 . In this way, the comfort of the UCC driving function can be increased. In addition, consistent behavior with the ACC driving function (at a standstill with no vehicle in front) can be achieved. The control unit 101 can be set up to cause a timer to be activated at a (possibly manually confirmed) traffic light 200 from the start of the phase change detection to green, which causes the vehicle to come to a standstill 100 the red indicator relating to the traffic light 200 is removed.

The control unit 101 of the vehicle 100 can be set up to block or prevent the vehicle 100 from starting at a signaling unit 200, 210 in response to the actuation of an operating element 411, 412, 413 of the user interface 107 if it is detected that the vehicle 100 is arranged in the first row at the signaling unit 200, 210. In other words, starting by actuating an operating element 411, 412, 413 of user interface 107 may only be enabled if at least one other front vehicle 100 is in front of vehicle 100 at signaling unit 200, 210. In this way, the safety of the UCC driving function can be increased. In particular, it can be reliably prevented in this way that the driver of vehicle 100 unintentionally actuates an operating element 411, 412, 413 of user interface 107 (in particular rocker switch 411 and/or a button 412, 413) from starting off at a (possibly . red) traffic light 200 causes.

It can thus be reliably prevented that the driver unknowingly initiates a drive-off when stationary at a red traffic light 200, for example by the driver adjusting the set speed using the rocker switch 411 or confirming a limit offer with the SET button 412. Furthermore, it can be prevented that a button operation by the driver causes the vehicle 100 to start moving again and accelerate to the set speed. This can be achieved in particular by the fact that the transition from the “vehicle stationary” state to the “starting off” state is not possible or blocked as a result of driver confirmation of an operating element 411, 412, 413 as long as vehicle 100 is in the front row a stop-relevant traffic light 200 stands. Actuation of an operating element 411, 412, 413 is therefore ineffective.

The control unit 101 of the vehicle 100 can be set up to determine on the basis of the surroundings data and/or on the basis of the position data (in connection with the map data) whether the vehicle 100 is in the first row at a signaling unit 200, 210 or not. In particular, the distance from vehicle 100 to the stopping point or to the stopping line of signaling unit 200, 210 can be determined. Based on the determined distance, it can then be determined whether vehicle 100 is in the first row or not.

It can happen that the status of the signaling unit 200, 210, in particular the color of a signal group 201 of the signaling unit 200, 210, cannot be recognized or cannot be reliably recognized on the basis of the environment data of the one or more environment sensors 103 of the vehicle 100. This could lead to reduced availability of the UCC driving function.

The control unit 101 can be set up to detect the vehicle in front driving (directly) in front of the vehicle 100 on the basis of the surroundings data. The UCC driving function, in particular the automated longitudinal guidance of the vehicle 100, can then be carried out or made available on the signaling unit 200, 210 on the basis of the driving behavior of the vehicle in front. By considering the driving behavior of the vehicle in front when operating the UCC driving function, the availability and thus the comfort of the driving function can be increased.

During the operation of the UCC driving function, it can happen, for example, that the color of a traffic light 200 can only be recognized insufficiently due to covering or poor lighting conditions. Furthermore, in the case of a complex intersection geometry (with different signal groups 201), it may not be possible to assign the different signal groups 201 to the individual directions of travel. In order to increase the degree of automation of the longitudinal control function and consequently to increase comfort for the driver, the behavior of the vehicle in front can also be evaluated from the map data, if necessary in addition to the traffic light colors and/or the attributes of a signaling unit 200, 210, and as part of the Operation of the driving function are taken into account.

For example, if the vehicle in front drives over the traffic light 200 ahead, which could potentially be green, the vehicle in front can be followed if necessary. In particular, automated braking can be canceled as long as a potentially relevant, green traffic light is detected on the basis of the environmental data. In other words, the control unit 101 can be set up to recognize on the basis of the surroundings data whether at least one of the signal groups 201 of the traffic signal system or traffic light 200 ahead has a green color. If this is the case, and if it is recognized (on the basis of the surroundings data) that the vehicle in front driving (directly) in front of vehicle 100 is driving over traffic signal system 200, then it can be brought about that vehicle 100 is also over traffic signal system 200 driving (even if it could not be clearly determined on the basis of the surroundings data and the map data whether the signal group 201 with the green color is relevant for the direction of travel of the vehicle 100). By considering the driving behavior of the vehicle in front in this way, the availability of the driving function can be surely increased.

Alternatively or additionally, the control unit 101 can be set up to assume that the traffic light 200 has switched from red to green (or is switched off if traffic lights are required) if the traffic light 200 is lost when the vehicle 100 is stationary and the vehicle in front is approaching. If necessary, an automated starting process of the vehicle 100 can then be brought about. In other words, the control unit 101 can be set up to recognize that the vehicle in front that is (directly) in front of the vehicle 100 is approaching at a signaling unit 200, 210. Thereupon, even without recognizing the (signalling) state of signaling unit 200, 210, vehicle 100 can be started up automatically (possibly only after the driver of vehicle 100 has actuated an operating element 411, 412, 413). In this way, the availability of the UCC driving function can be increased in a safe manner.

The driver of vehicle 100 typically has the option of overriding the automated longitudinal guidance of the UCC driving function by actuating the accelerator pedal and/or the brake pedal. The detected actuation of the accelerator pedal and/or the brake pedal can also be used to end the UCC driving function. However, the automatic termination of the UCC driving function in response to a detected actuation of the accelerator pedal and/or the brake pedal of vehicle 100 can lead to reduced comfort and/or reduced safety of the UCC driving function.

For example, it may happen that the stopping position of vehicle 100 at a signaling unit 200, 210, in particular at the stop line of a signaling unit 200, 210), is perceived by the driver of vehicle 100 as too far in front of signaling unit 200, 210 (in particular if vehicle 100 is in the first row in front of the stop line and therefore has no vehicle in front). In such a case, the driver could be inclined to drive vehicle 100 closer to the stop line by actuating the accelerator pedal, which could, however, lead to the UCC driving function being aborted and/or as a result of which automated starting as part of the driving function may be prevented .

In another example, the driver of the vehicle 100 may be inclined to move from a stop in a first lane to an adjacent lane before a traffic light 200 (e.g., to reduce the distance to the stop line). For this purpose, the driver would actuate the accelerator pedal in order to drive vehicle 100 into the adjacent lane. This could lead to the abortion of the UCC driving function and thus to a lack of longitudinal guidance support when subsequently starting at traffic lights 200.

Furthermore, it could happen that a signaling unit 200, 210 recognized by the UCC driving function is not taken into account in the automated longitudinal guidance of the vehicle 100 (and may be run over without automatic braking) if the driver at the time of recognition of the signaling unit 200, 210 das Accelerator pedal pressed (and therefore the support of the UCC driving function is terminated).

On the other hand, it should be possible for the driver of the vehicle 100 to override the UCC driving function in a reliable and comfortable manner (in particular by actuating the accelerator pedal), e.g.

The control unit 101 can be set up to ascertain deflection information relating to the deflection, in particular with regard to the extent of the deflection, of the accelerator pedal. The deflection information can be determined based on an accelerator pedal sensor of the vehicle 100, for example. As an alternative or in addition, control unit 101 can be set up to determine time information relating to the duration of the actuation of the accelerator pedal. It can then be determined on the basis of the deflection information and/or on the basis of the time information whether the support of the automated longitudinal guidance of the vehicle 100 is provided at a signaling unit 200, 210 or not and/or whether the driving function is ended or not.

In particular, control unit 101 can be set up to determine on the basis of the deflection information whether the deflection of the accelerator pedal is greater or less than a deflection threshold value (e.g. 25% of the maximum possible deflection of the accelerator pedal). Furthermore, the control unit 101 can be set up to determine on the basis of the time information whether the duration of the deflection of the accelerator pedal is greater or less than a time threshold value (e.g. of 4 seconds).

• • die Auslenkung des Fahrpedals kleiner als oder gleich wie der Auslenkungs-Schwellenwert ist; und
• • die Dauer der Betätigung des Fahrpedals kleiner als oder gleich wie der Zeit-Schwellenwert ist.

The control unit 101 may be set up to allow actuation of the accelerator pedal without ending the UCC driving function if it is determined that

• • the accelerator pedal deflection is less than or equal to the deflection threshold; and
• • the duration of the application of the accelerator pedal is less than or equal to the time threshold.

• • die Auslenkung des Fahrpedals größer als der Auslenkungs-Schwellenwert ist; oder
• • die Dauer der Betätigung des Fahrpedals größer als der Zeit-Schwellenwert ist.

On the other hand, the UCC driving function can be dropped or terminated if it is determined that

• • the deflection of the accelerator pedal is greater than the deflection threshold value; or
• • the duration of the actuation of the accelerator pedal is greater than the time threshold value.

In this case, the dropping or aborting can only relate to the next signaling unit 200, 210, which follows the actuation of the accelerator pedal. Thus, if necessary, only a temporary release or a temporary termination of the UCC driving function can be effected (only for the signaling unit 200, 210, which directly follows the actuation of the accelerator pedal).

In this way, the comfort and/or safety of the UCC driving function can be increased. In particular, it can be made possible for the driver of the vehicle 100 to drive the vehicle 100 closer to the stop line and/or to an adjacent lane in front of a signaling unit 200, 210 by (slightly) pressing the accelerator pedal (without the automated support of the UCC Driving function, for example for the subsequent starting of vehicle 100, is ended). Furthermore, it is possible in this way for a recognized signaling unit 200, 210 to be taken into account in the automated longitudinal guidance of vehicle 100 even if the driver briefly and relatively lightly actuates the accelerator pedal (while signaling unit 200, 210 is recognized). Furthermore, a comfortable and safe override of an intervention of the UCC driving function can be made possible.

The driving function can thus be designed in such a way that (only) when a specific accelerator pedal angle is exceeded is the immediate release of the driving function effected. Furthermore, the driving function can be dropped if a specific time threshold value for the actuation of the accelerator pedal is exceeded (even if the deflection threshold value is not exceeded). On the other hand, the time until the time threshold value is reached can be used by the driver to approach the stop line of an intersection.

Furthermore, the driving function can be designed in such a way that the driving function is not dropped if a traffic light 200 is detected while the accelerator pedal is being pressed. In this way, crossing the traffic light 200 without reacting can be prevented in a reliable manner.

When standing still at a red traffic light 200, it can happen that the driver drives off by pressing the accelerator pedal when the traffic light 200 changes to green because the change to green has not yet been recognized by the UCC driving function (e.g. due to latencies and/or due to a non-detection of the color change). Actuation of the accelerator pedal could lead to the UCC driving function being aborted (and to the output of an associated take-over request (TOR) or an associated takeover request). The driver of vehicle 100 may find this annoying.

The control unit 101 can be set up to determine speed data relating to the driving speed of the vehicle 100 during a starting process, which the driver of the vehicle 100 causes by actuating the accelerator pedal. Furthermore, the control unit 101 can be set up to take over the automated longitudinal guidance from the driver as long as the driving speed caused by the actuation of the accelerator pedal has not yet exceeded a predefined speed threshold value. The output of a TOR and/or the termination of the UCC driving function can thus be suppressed and/or prevented until the speed threshold value is reached (and the driving function can take over the longitudinal guidance). On the other hand, the TOR can be output and/or the UCC driving function can be aborted if (in particular as soon as) the speed threshold value (e.g. 10 km/h) is reached or exceeded. In this way, the comfort for the driver of the vehicle 100 can be further increased.

• • ein Sport-Fahrmodus, bei dem das Fahrzeug 100 eine relativ hohe Fahrdynamik, mit relativ starken Beschleunigungs- und/oder Verzögerungswerten, aufweist;
• • ein Komfort-Fahrmodus, bei dem das Fahrzeug 100 eine besonders komfortable Fahrweise aufweist, mit relativ niedrigen Beschleunigungs- und/oder Verzögerungswerten, und/oder
• • ein Eco-Fahrmodus, bei dem das Fahrzeug 100 eine besonders energiesparende Fahrweise aufweist.

The control unit 101 can be set up to determine a driving mode from a plurality of different driving modes in which the vehicle 100 is operated. Exemplary driving modes are

• • a sports driving mode, in which vehicle 100 has relatively high driving dynamics, with relatively strong acceleration and/or deceleration values;
• • a comfort driving mode, in which vehicle 100 has a particularly comfortable driving style, with relatively low acceleration and/or deceleration values, and/or
• • an eco-driving mode, in which the vehicle 100 has a particularly energy-saving driving style.

The driving mode can be set by the user of the vehicle 100 e.g. via the user interface 107, e.g. via one or more operating elements of the user interface 107.

The control unit 101 can also be set up, the UCC driving function depending on to operate in the set driving mode. In particular, the driving behavior, such as the deceleration behavior, of the vehicle 100 in relation to an upcoming signaling unit 200, 210 can be adapted depending on the driving mode. For example, the point in time from which vehicle 100 responds to a recognized signaling unit 200, 210 (at which point vehicle 100 should stop) can be adjusted as a function of the driving mode. In the eco driving mode, for example, a particularly early reaction of the vehicle 100 can be brought about, while in the comfort driving mode a reaction is only brought about later, and while in the sports driving mode the reaction is brought about even later.

• • ein Segel-Betrieb des Fahrzeugs 100, bei dem die Räder des Fahrzeugs 100 von dem Antriebsmotor des Fahrzeugs 100 entkoppelt werden. Ggf. kann der Antriebsmotor dann deaktiviert werden;
• • ein Schlepp-Betrieb des Fahrzeugs 100, bei dem die Räder des Fahrzeugs 100 den Antriebsmotor mitschleppen, was zu einer Schlepp-Verzögerung des Fahrzeugs 100 führt; und/oder
• • ein aktiver (Reib- und/oder Rekuperations-) Brems-Betrieb, bei dem aktiv (z.B. durch eine Reibbremse und/oder durch eine elektrische Maschine) ein Bremsmoment auf ein oder mehrere Räder des Fahrzeugs 100 bewirkt wird.

Alternatively or additionally, the type or type of reaction of vehicle 100 to a recognized signaling unit 200, 210 to be taken into account can be adapted as a function of the set driving mode. Exemplary reaction types or species are:

• • coasting operation of the vehicle 100, in which the wheels of the vehicle 100 are decoupled from the drive motor of the vehicle 100. If necessary, the drive motor can then be deactivated;
• • a towing operation of the vehicle 100, in which the wheels of the vehicle 100 drag the drive motor, which leads to a towing deceleration of the vehicle 100; and or
• • an active (friction and/or recuperation) braking mode in which a braking torque is actively applied to one or more wheels of vehicle 100 (for example by a friction brake and/or by an electric machine).

In the eco driving mode, e.g. when approaching a signaling unit 200, 210, a transition can first be made to coasting mode, then to towing mode and finally to braking mode. In the comfort driving mode, the coasting mode can be dispensed with, and the towing mode and then the braking mode can be initiated directly. In the sport driving mode, coasting operation and towing operation can be dispensed with, and braking operation can be initiated directly.

The deceleration behavior of vehicle 100 when approaching a signaling unit 200, 210 can consequently be adapted to the set driving mode. In this way, the comfort of the vehicle 100 can be further increased.

The control unit 101 can thus be set up to vary the (output) point in time for reacting to a traffic light depending on the set driving mode. Traffic light control can start relatively early in the ECO driving mode, e.g. with an operating sequence: coasting mode, towing mode and braking mode. In the comfort driving mode, an average start time for the traffic light control can be selected, e.g. with an operating sequence of towing operation and braking operation. In Sport driving mode, traffic light control can start relatively late, e.g. directly with braking.

Traffic light regulation (in particular the deceleration curve of vehicle 100) can be designed to be particularly convenient by adapting it to the driving mode. Furthermore, an anticipatory driving style can be displayed "by slowing down the accelerator pedal early", which, among other things, reduces the dynamics to a stationary target object in advance. A gain in comfort and safety for the driver of the vehicle 100 can thus be brought about. Depending on the driving mode (e.g. Eco, Comfort and Sport), a (driving and/or deceleration) characteristic adapted to the driving mode can be set. This enables a particularly harmonious interaction between the ACC function and the UCC driving function.

As already explained above, vehicle guidance system 101 can be set up to determine a complexity measure for a signaling unit 200, 210 ahead. The degree of complexity, in particular the value of the degree of complexity, can be determined on the basis of the map data in relation to the signaling unit 200, 210. The map data can include one or more attributes, such as the number of different signal groups of the signaling unit 200, 210.

It can happen that the map data for an upcoming signaling unit 200, 210 does not include any attributes from which the complexity of the signaling unit 200, 210 can be inferred. In order to nevertheless be able to provide an automatic mode of the driving function, the vehicle guidance system 101 can be set up to determine the complexity, in particular the degree of complexity, for the signaling unit 200, 210 on the basis of environmental information, the environmental information describing the environment of the signaling unit 200, 210. The environmental information can be determined on the basis of the map data and/or on the basis of the environmental data.

• • die Anzahl von Fahrspuren der Straße bzw. Fahrbahn, die zu dem Knotenpunkt mit der Signalisierungseinheit 200, 210 führt;
• • der Straßentyp der Straße, die auf den Knotenpunkt zuführt; beispielhafte Straßentypen sind: eine Landstraße, eine Straße in einer Stadt, ein (Privat-) Weg, etc.
• • ein Typ des Knotenpunkts, an dem die Signalisierungseinheit 200, 210 angeordnet ist; beispielhafte Typen von Knotenpunkten sind: eine T-Kreuzung, eine Kreuzung mit vier Zufahrten, ein Kreisverkehr, etc., und/oder
• • die Anzahl von abgehenden Straßen, die von dem Knotenpunkt abgehen (und somit als mögliche Fahrtrichtungen für das Fahrzeug 100 an dem Knotenpunkt zur Verfügung stehen).

Exemplary environmental information is

• • the number of lanes of the road leading to the junction with the signaling unit 200, 210;
• • the road type of the road leading to the node; exemplary street types are: a country street, a street in a city, a (private) way, etc.
• • a type of node at which the signaling unit 200, 210 is located; exemplary types of junctions are: a T-junction, a four-way junction, a roundabout, etc., and/or
• • the number of exit roads that exit from the node (and thus are available as possible directions of travel for the vehicle 100 at the node).

Furthermore, based on the map data, it can be checked whether or not the signaling unit 200, 210 is listed in the map data at all.

The vehicle guidance system 101 can be set up to operate the (UCC) driving function depending on the environmental information relating to the environment of the signaling unit 200, 210. For example, based on the environmental information, it can be determined whether the approach to the signaling unit 200, 210 has one or more lanes. If the access road has only one lane, it can be determined that the signaling unit 200, 210 has a relatively low degree of complexity, and the driving function can be operated in automatic mode if necessary (possibly even if there is no map attribute for the number of different signal groups of the signaling unit 200, 210 is available). A prerequisite for operation in the automatic mode can be that the signaling unit 200, 210 is listed in the map data at all.

If, on the other hand, the entrance to the signaling unit 200, 210 has several lanes (and/or the signaling unit 200, 210 is not listed in the map data), it can be determined that the signaling unit 200, 210 has a relatively high degree of complexity, and the Driving function can only be operated in manual mode.

• • ob auf der Zufahrt zu der Signalisierungseinheit 200, 210 und/oder auf der von der Signalisierungseinheit 200, 210 wegführenden Fahrbahn ein Tunnel angeordnet ist; diese Umfeldinformation kann z.B. durch ein Karten-Attribut angezeigt werden;
• • ob die Zufahrt zu der Signalisierungseinheit 200, 210 eine Auffahrt-Rampe (z.B. zu einer Schnellstraße) ist; diese Umfeldinformation kann z.B. durch ein Karten-Attribut angezeigt werden;
• • ob sich an dem Knotenpunkt der Signalisierungseinheit 200, 210 eine Bypass-Fahrspur (d.h. eine Umgehungs-Fahrspur) befindet, die ggf. an der Signalisierungseinheit 200, 210 vorbeiführt; diese Umfeldinformation kann z.B. durch eine geometrische Auswertung von benachbarten topologischen Knotenpunkten ermittelt werden; und/oder
• • ob im Umfeld der Signalisierungseinheit 200, 210 (z.B. entlang der Fahrstrecke des Fahrzeugs 100) eine relativ hohe Dichte von Signalisierungseinheiten 200, 210 und/oder Knotenpunkten vorliegt, z.B. eine relativ hohe Anzahl von Knotenpunkten, die in einem relativ kurzen Abstand aufeinander folgen.

Alternatively or additionally, the environmental information can include information relating to the complexity of the road network in the vicinity of the signaling unit 200, 210. The area information can be determined on the basis of one or more attributes of the map data (for the area around the signaling unit 200, 210) and/or on the basis of a geometric evaluation of the map data. The environment information can show, for example,

• • whether a tunnel is arranged on the access road to the signaling unit 200, 210 and/or on the roadway leading away from the signaling unit 200, 210; this environmental information can be displayed, for example, by a map attribute;
• • whether the entrance to the signaling unit 200, 210 is an access ramp (eg to an expressway); this environmental information can be displayed, for example, by a map attribute;
• • whether there is a bypass lane (ie a bypass lane) at the intersection of the signaling unit 200, 210, which may lead past the signaling unit 200, 210; this environmental information can be determined, for example, by a geometric evaluation of neighboring topological nodes; and or
• • whether there is a relatively high density of signaling units 200, 210 and/or junctions in the vicinity of the signaling unit 200, 210 (e.g. along the route of the vehicle 100), e.g. a relatively high number of junctions that follow one another at a relatively short distance.

The above environment information can indicate a relatively high complexity of the road situation in the environment of the signaling unit 200, 210. Based on this, it can be concluded that the signaling unit 200, 210 has a relatively high degree of complexity (possibly even when a map attribute of the signaling unit 200, 210 indicates that the signaling unit 200, 210 only has a single signal group). If there is a relatively high level of complexity (i.e. a level of complexity that exceeds a certain complexity threshold value), the automatic mode of the driving function can be prevented (and possibly only the manual mode can be enabled).

By evaluating available information relating to the environment of a signaling unit 200, 210, the degree of complexity, in particular the value of the degree of complexity, of the signaling unit 200, 210 can be determined with increased accuracy and/or reliability. In this way, the comfort of the driving function can be increased. In particular, the availability of the automatic mode of the driving function can be increased in this way.

As already explained above, the vehicle guidance system 101 can be set up to automatically guide the vehicle 100 longitudinally behind a vehicle in front (and thus carry out a following drive). In particular, the vehicle guidance system 101 can cause the vehicle 100 to stop at a recognized signaling unit 200, 210 while the vehicle 100 is following a drive behind a vehicle in front performs. Based on the signaling status (eg the color “red”) it may have been determined that vehicle 100 must stop at signaling unit 200, 210, in particular at a stop line of signaling unit 200, 210. Vehicle 100 can then be stopped as a function of the vehicle in front, in particular in such a way that vehicle 100 stops behind the vehicle in front at the stop line of signaling unit 200, 210.

While approaching the signaling unit 200, 210, it may happen that a stop line is recognized on the basis of the surroundings data. Since the stop line of the lane traveled by vehicle 100 is typically covered by the vehicle in front when driving ahead, the detected stop line can be a stop line in an adjacent lane with a relatively high probability, particularly when the stop line is detected within a certain distance interval or time interval before reaching the signaling unit 200, 210. The identified stop line can be arranged at a position between the current position of vehicle 100 and the position of signaling unit 200, 210.

Vehicle guidance system 101 can be set up to check whether vehicle 100 is already within a predefined time interval or distance interval in front of signaling unit 200, 210 at the time of detection or at the detection position at which the stop line is detected or not. If it is determined that vehicle 100 is already within the predefined time interval or distance interval, the identified stop line can be ignored as part of the driving function. On the other hand, the identified stop line can be taken into account as part of the driving function.

The vehicle guidance system 101 can be set up to use an alternative method to determine a (possibly virtual) stop line for the vehicle 100 on the recognized signaling unit 200, 210 (if the stop line recognized on the basis of the surroundings data is ignored). In particular, the vehicle 100 can be stopped as part of the following drive behind the vehicle in front (so that the vehicle 100 comes to a standstill at a specific target distance behind the vehicle in front).

Furthermore, the vehicle guidance system 101 can be set up to take the identified stop line into account during the deceleration process of the vehicle 100 (if the stop line identified on the basis of the surroundings data is to be taken into account). For example, vehicle 100 can be automatically decelerated (taking into account the vehicle in front) such that vehicle 100 comes to a standstill at the identified stop line (if this is done taking into account the vehicle in front, in particular taking into account the required target distance from the vehicle in front -vehicle, is possible). In other words, the vehicle 100 can be automatically decelerated at the identified stop line, with the automated deceleration also taking into account the distance to the vehicle in front (in particular to prevent the vehicle from coming too close to the vehicle in front). vehicle drives up).

The robustness and comfort of the (UCC) driving function can be increased by the possible ignoring of a stop line recognized on the basis of the environmental data at a signaling unit 200, 210.

As already explained above, the vehicle guidance system 101 can be set up to detect an object lying ahead, in particular the stop line of a signaling unit 200, 210, to which an automated deceleration (to a standstill) is to take place. The object can be detected and in particular localized on the basis of the environmental data from one or more environmental sensors 103 of vehicle 100 and/or on the basis of the map data in relation to the road network traveled by vehicle 100 .

In particular, a signaling unit 200, 210 and an object (in particular a stop line) assigned to the signaling unit 200, 210 can be detected on the basis of the environmental data. Furthermore, the distance between the detected object and the vehicle can be determined based on the environmental data (e.g. based on a temporal sequence of images from a camera). However, determining or estimating the distance on the basis of the environmental data from a camera is typically relatively imprecise, particularly in the case of relatively large distances.

The vehicle guidance system 101 can be set up to bring about the automated longitudinal guidance of the vehicle 100 in relation to the object associated with the signaling unit 200, 210 ahead, depending on the determined distance. In particular, the automated deceleration of the vehicle 100 may be effected (to cause the vehicle 100 to come to a stop at the object's position) as a function of the determined distance. Due to the relatively high inaccuracy of the distance measurement, fluctuations in the determined distance can occur as the object is approached. This can cause a fluctuating ending approach behavior of the vehicle 100 and thus lead to reduced comfort for the user of the vehicle 100.

The vehicle guidance system 101 can be set up to determine the position of the detected object (e.g. the GPS coordinates) on the basis of the map data. The position of the detected object can be indicated by a map attribute of the signaling unit 200, 210, for example. A map-based distance (also referred to as map data-based distance in this document) between the vehicle and the object can then be determined based on the determined position of the object and based on the current position of the vehicle 100 . The map-based distance can be more precise than the camera-based distance described above (which is also referred to as environmental data-based distance in this document), particularly in the case of relatively large distances.

The vehicle guidance system 101 can be set up to determine an estimated value of the distance between the vehicle 100 and the detected object (in particular the stop line) on the signaling unit 200, 210 ahead based on the map-based distance and on the basis of the camera-based distance. The estimated value of the distance can be determined as a (possibly weighted) average of the map-based distance and the camera-based distance. The weighting can be shifted from the map-based distance to the camera-based distance as the distance decreases, in particular as the estimated value of the distance decreases.

A camera-based object (e.g. a traffic light, etc.) can thus be assigned to an object in the map data through an upstream analysis, the distance of which is known from the map data. A weighted averaging of the camera and map-based distances can smooth fluctuations in the determination of the distance estimate. The weights can be distance-dependent, so that the weight shifts from being completely map-based to completely camera-based over the course of the approach. To determine the estimated value of the distance to a recognized signaling unit 200, 210 (in particular to the stop line of the signaling unit 200, 210), the distance from the assigned intersection and the camera-based distance can be weighted together.

Determining the estimated value of the distance on the basis of the surroundings data and on the basis of the map data makes it possible to determine the estimated value in a stable manner while the vehicle 100 is approaching a signaling unit 200, 210. In this way, the comfort and safety of the driving function can be increased.

As already explained above, vehicle guidance system 101 can be set up to transmit distance information relating to the time and/or spatial distance between vehicle 100 and the signaling unit 200, 210 ahead, in particular between vehicle 100 and the stop line of the signaling unit 200, 210 ahead , to investigate. The distance information can be determined on the basis of the surroundings data and/or on the basis of the map data.

The distance information can be taken into account as part of the operation of the (UCC) driving function. In particular, the automated deceleration of vehicle 100 at the signaling unit 200, 210 ahead can be carried out (possibly repeated while vehicle 100 is approaching signaling unit 200, 210) depending on the currently determined distance information (and possibly repeated while the Approach of the vehicle 100 to the signaling unit 200, 210) are adjusted.

Furthermore, the vehicle guidance system 101 can be set up to check the presence of the signaling unit 200, 210 and/or the signaling status (in particular the traffic light color) on the basis of the environment data (possibly repeatedly while the vehicle 100 is approaching the signaling unit 200, 210). of the signaling unit 200, 210 to determine.

As vehicle 100 approaches signaling unit 200, 210, the repeated evaluation of the surroundings data (and possibly the map data) can result in contradictions between the measured values at different points in time. Alternatively or additionally, the signaling state of the signaling unit 200, 210 can change during the approach. Such abrupt changes in the recognized starting situation to the signaling unit 200, 210 can lead to abrupt (and possibly uncomfortable) changes in the driving behavior of the vehicle 100, particularly when the vehicle 100 is already relatively close to the signaling unit 200, 210.

The vehicle guidance system 101 can be set up to calculate the distance between the vehicle 100 and the (stop line of) the signaling unit 200, 210 and/or a detected change in the signaling status of the signaling unit 200, 210 to be ignored during the operation of the driving function on the signaling unit 200, 210 if the vehicle 100 is already at a spatial and/or temporal distance from the signaling unit 200, 210 which is equal to or smaller than a predefined (spatial and/or temporal ) distance threshold.

In particular, starting from a distance corresponding to the distance threshold value, the distance can be determined solely on the basis of the odometry of vehicle 100 (e.g. the wheel speed of vehicle 100). For example, vehicle 100 can be automatically decelerated to the position of the stop line of signaling unit 200, 210, which is valid at the point in time at which the distance from vehicle 100 falls below the distance threshold value (for the first time).

Alternatively, a change in the signaling state (in particular a color change) of the signaling unit 200, 210 can be ignored, if necessary from a distance corresponding to the distance threshold value. In particular, a deceleration can be continued until standstill, even if the signaling unit 200, 210 switches to green or yellow shortly before the vehicle 100 reaches the stop line of the signaling unit 200, 210.

By ignoring measured values in relation to the distance and/or measured values in relation to the signaling status, which are determined on the basis of the environmental data from a distance corresponding to the distance threshold value, a particularly comfortable, robust and safer operation of the driving function can be made possible .

As already explained above, the vehicle guidance system 101 can be set up to operate the (UCC) driving function in an automatic mode or in a manual mode. A detected signaling unit 200, 210 ahead is automatically taken into account in the automated longitudinal guidance of the vehicle 100 at the detected signaling unit 200, 210 in the automatic mode. In the manual mode, on the other hand, the driver of the vehicle 100 is asked whether the recognized signaling unit 200, 210 should be taken into account or not. The driver can then use feedback to vehicle guidance system 101 to decide and/or effect whether the recognized signaling unit 200, 210 is taken into account or not.

The fact whether the driving function is executed in automatic mode or only in manual mode can depend on one or more properties of the signaling unit 200, 210, in particular whether the signaling status of the signal generator 201 relevant to the direction of travel of the vehicle 100 can be clearly determined or not. If the signaling unit 200, 210 only has a single signal group, for example, whose one or more signal transmitters 201 always have the same signaling status (as indicated, for example, by the map data), then the driving function can be operated in automatic mode. If, on the other hand, it is unclear whether the signaling status of a signal generator 201 (determined on the basis of the surroundings data) is relevant for the direction of travel of the vehicle 100, only a manual mode of the driving function can be effected.

The one or more standard rules according to which the vehicle guidance system 101 decides whether the driving function is to be operated in automatic mode or in manual mode may be known to the driver of the vehicle 100 or may be learned by the driver based on the behavior of the driving function (so that the driver gets used to it). This can lead to the driver of vehicle 100 expecting a specific behavior of the driving function, in particular a specific automatic behavior of the driving function, and becoming careless in monitoring the operation of the driving function (according to SAE Level 2). This can lead to reduced driving safety.

Vehicle guidance system 101 can be set up to operate the driving function at least temporarily in a manner that is unfamiliar to the driver, in order to prevent the driver from becoming accustomed to a defined behavior of the driving function and becoming inattentive as a result. The different behavior of the driving function can be brought about at (pseudo)randomly selected points in time, in particular at (pseudo)randomly selected signaling units 200, 210. In particular, the vehicle guidance system 101 can be set up to (pseudo)randomly select signaling units 200, 210 on which the driving function is operated in manual mode, although it would be possible to operate the driving function on the respective signaling unit 200, 210 in automatic mode . In this way, a habituation effect on the part of the driver and an associated reduction in driving safety can be avoided.

As already explained above, in a mixed operation of automatic and manual functional characteristics, a habituation effect on the automated characteristic of the driving function cannot be ruled out. By the in itself automa tized possible functional characteristics are output as a manual offer at random points in time or in random driving situations, it is possible to prevent the driver from getting used to it, both with regard to the general functional behavior (if the vehicle 100 is traveling in an area with generally high availability) as well as in individual situations (which the driver usually always experiences as automated).

As part of the UCC driving function, an aUCC control is typically carried out at relatively simple traffic light intersections (with only a single signal group). Every umpteenth (e.g. every 20th) control can then be offered manually (although aUCC operation would be possible). The initial value of the counter can be chosen randomly when the vehicle 100 starts, in order to ensure that the driver is regularly confronted with mUCC operation, but (even with the same driving routes) different signaling units 200, 210 for a deviation from the standard behavior of the driving function can be selected.

Thus, mUCC operation can be effected at random times on selected signaling units 200, 210, although aUCC operation would be possible. The deviating mUCC operation can e.g. take place depending on a counter (e.g. when the counter reaches a certain period value), whereby the counter can be initialized by means of a random number generator in order to cause random times during a journey at which the deviating mUCC operation takes place .

A habituation effect on the part of the driver of vehicle 100 can thus be reliably avoided.

Different aspects of the vehicle guidance system 101 described in this document are described below using methods. It should be noted that the different features of the different methods can be combined with one another in any desired way.

5a shows a flowchart of an exemplary (possibly computer-implemented) method 500 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100.

The method 500 includes, during the operation of the driving function, the determination 501 of data in relation to a first signaling unit 200, 210 ahead in the direction of travel of the vehicle 100 can be determined in relation to the road network traveled by vehicle 100 .

Furthermore, the method 500 includes operating 502 the driving function on the first signaling unit 200, 210 depending on the data relating to the first signaling unit 200, 210 in an automatic mode or in a manual mode. The first signaling unit 200, 210 can be taken into account in the automatic mode, possibly automatically, and in the manual mode, possibly only after confirmation by a user of the vehicle 100 in the automated longitudinal guidance of the vehicle 100.

For example, the driving function can be operated in the automatic mode if the color of a signal group 201 of the signaling unit 200, 210 relevant to the direction of travel of the vehicle 100 can be clearly determined on the basis of the data. If the color of the relevant signal group 201 cannot be clearly determined, the manual mode can be used if necessary. The automatic mode or the manual mode of the driving function can thus be used in a flexible manner depending on the available data for a signaling unit 200, 210. The flexible change between the automatic mode and the manual mode can increase the availability and thus the comfort of the driving function.

5b shows a flowchart of an exemplary (possibly computer-implemented) method 510 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210.

The method 510 includes, during operation of the driving function, detecting 511 that at a configuration time or at a configuration position of the vehicle 100 a user of the vehicle 100 causes a configuration change of a property of the driving function (e.g. a change from the automatic mode to the manual mode, or a deactivation of the driving function).

Method 510 also includes determining 512 that at the configuration time or at the configuration position a first signaling unit 200 , 210 ahead in the direction of travel of vehicle 100 is already taken into account in the automated longitudinal guidance of vehicle 100 . Furthermore, the method 510 includes taking into account 513 the configuration change only in the signaling unit 200, 210 that follows the first signaling unit 200, 210 during the automated longitudinal guidance of vehicle 100 and/or only after the end or conclusion of the automated longitudinal guidance of vehicle 100 at first signaling unit 200, 210 (e.g. only after vehicle 100 has braked at first signaling unit 200, 210 to a standstill). The automated longitudinal guidance for the first signaling unit 200, 210 can continue to be effected without taking the configuration change into account. A particularly safe operation of the driving function can be made possible in this way.

5c shows a flowchart of an exemplary (possibly computer-implemented) method 520 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210.

The method 520 includes, during the operation of the driving function, the determination 521 of surroundings data in relation to the surroundings of the vehicle 100 in front of the vehicle 100 in the direction of travel. Furthermore, the method 520 includes the detection 522, on the basis of the surroundings data, of a first signaling unit 200, 210, which is located on the lane traveled by the vehicle 100 in front of the vehicle 100 in the direction of travel.

The method 520 also includes determining 523 that there is a contradiction between the first signaling unit 200, 210 detected on the basis of the surroundings data and the map data with regard to the roadway network traveled by the vehicle 100. For example, it can be recognized that the first signaling unit 200, 210 recognized on the basis of the environmental data has a different (in particular a higher) number of different signal groups 201 than recorded in the map data.

In addition, the method 520 includes, in response to the detected contradiction, causing 524 a non-availability output, in particular an NVA, to the user of the vehicle 100 in order to inform the user that the first signaling unit 200, 210 detected on the basis of the environmental data is not is taken into account in the driving function for automated longitudinal guidance of vehicle 100 . In this way, the safety of the driving function can be further increased.

5d shows a flowchart of an exemplary (possibly computer-implemented) method 530 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210.

The method 530 includes, during the operation of the driving function, the determination 531 of environmental data in relation to the area in front of the vehicle 100 in the direction of travel of the vehicle 100. The method 530 also includes the detection 532, based on the environmental data, of a first signaling unit 200, 210, which is arranged in front of the vehicle 100 on the roadway traveled by the vehicle 100 in the direction of travel.

Method 530 also includes determining 533 distance information relating to the temporal and/or spatial distance 311 of vehicle 100 to first signaling unit 200, 210. Method 530 also includes causing or suppressing 534 an output of information relating to this to the first signaling unit 200, 210 depending on the distance information. In particular, the output (in particular an offer for automated longitudinal guidance at the first signaling unit 200, 210) can be suppressed if the vehicle 100 is still too far away from the first signaling unit 200, 210. Alternatively or additionally, an output (in particular an unavailability output) can be suppressed if vehicle 100 is already too close to first signaling unit 200, 210. In this way, the relevance of the output and thus the convenience of the driving function can be increased.

5e shows a flowchart of an exemplary (possibly computer-implemented) method 540 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210.

The method 540 includes, during the operation of the driving function, determining 541 that the vehicle 100 is carrying out a starting process at a first signaling unit 200, 210. Furthermore, the method 540 includes the detection 542, on the basis of the environment data from one or more environment sensors 103 of the vehicle 100, of a second signaling unit 200, 210 following the first signaling unit 200, 210, which is ahead in the direction of travel on the lane traveled by the vehicle 100 the vehicle 100 is arranged.

In addition, method 540 includes checking 543 whether one or more launch conditions relating to the launch are met or not (e.g. one or more launch conditions relating to the driving speed of vehicle 100 and/or in Reference to the temporal or spatial distance of the vehicle 100 from the first signaling unit 200, 210).

The method 540 also includes taking into account 544 the second signaling unit 200, 210 in the automated longitudinal guidance of the vehicle 100 depending on whether the one or more starting process conditions are met or not. In particular, a second signaling unit 200, 210, which is recognized in the immediate temporal or spatial proximity to the first signaling unit 200, 210, can remain unconsidered. In this way, the reliability and comfort of the driving function can be increased (e.g. since the output of incorrectly identified signaling units 200, 210 is avoided).

5f shows a flowchart of an exemplary (possibly computer-implemented) method 550 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210.

The method 550 includes, during the operation of the driving function, the detection 551, based on the environment data from one or more environment sensors 103 of the vehicle 100, a first signaling unit 200, 210, on the road traveled by the vehicle 100 in the direction of travel in front of the vehicle 100 is arranged. Furthermore, the method 550 includes determining 552 driver data in relation to the attentiveness of the driver of the vehicle 100 when monitoring the driving function. In addition, the method 550 includes the operation 553 of the driving function in relation to the automated longitudinal guidance of the vehicle 100 on the first signaling unit 200, 210 as a function of the driver data. In particular, the driving function can be operated in automatic mode or in manual mode depending on the driver data. In this way, the safety and/or the comfort of the driving function can be increased.

5g shows a flowchart of an exemplary (possibly computer-implemented) method 560 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210.

The method 560 includes, during the operation of the driving function, the detection 561 of a first signaling unit 200, 210, which is arranged on the lane traveled by the vehicle 100 in front of the vehicle 100 in the direction of travel. Furthermore, the method 560 includes the determination 562 of holding information in relation to the expected holding time of the vehicle 100 at the first signaling unit 200, 210 and/or in relation to the type of the first signaling unit 200, 210 (and the associated expected holding time ).

In addition, the method 560 includes the effecting 563 of an automated deceleration of the vehicle 100 at the first signaling unit 200, 210 as a function of the stop information. In particular, the time profile of the delay can be adjusted as a function of the hold information. In this way, the comfort and/or the safety of the driving function can be increased.

5h shows a flowchart of an exemplary (possibly computer-implemented) method 570 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210. The method 570 includes, during operation of the driving function, determining 571 that the vehicle 100 is at a signaling unit 200, 210 (in particular at a red traffic light). Furthermore, the method 570 includes the recognition 572 that the driver of the vehicle 100 operates an operating element 411, 412, 413 (in particular a button or a rocker) of the user interface 107 of the vehicle 100 to control the driving function. The method 570 also includes the effecting 573 of an automated starting of the vehicle 100 in response to the detected actuation of the operating element 411, 412, 413. A comfortable and safe starting at a signaling unit 200, 210 can thus be made possible.

5i shows a flowchart of an exemplary (possibly computer-implemented) method 580 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210.

The method 580 includes, during the operation of the driving function, determining 581, on the basis of environmental data in relation to a vehicle in front (possibly directly) driving in front of the vehicle 100, that the vehicle in front has a signaling unit 200, 210 associated traffic junction (in particular via an intersection). The vehicle in front can be arranged in the same lane as vehicle 100.

Furthermore, the method 580 includes, in response to the detected driving of the vehicle in front, causing 582 that the vehicle 100 is then also automatically guided behind the vehicle in front via the traffic junction when the status of the signaling unit 200, 210 (in particular the color of the relevant signal group 201) in relation to the permission to drive over the traffic junction cannot be determined unambiguously. By considering the behavior of the vehicle in front, the availability and thus the comfort of the driving function can be increased.

5y shows a flowchart of an exemplary (possibly computer-implemented) method 590 for providing a driving function (in particular the UCC driving function) for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210.

The method 590 includes, during the operation of the driving function, detecting 591 that the accelerator pedal of the vehicle 100 is actuated. Method 590 also includes determining 592 actuation information relating to the actuation of the accelerator pedal and/or to a reaction of vehicle 100 caused by the actuation of the accelerator pedal. Method 590 also includes adapting 593, in particular continuing or aborting , the operation of the driving function depending on the actuation information. In particular, by actuating the accelerator pedal in a selective manner (for each signaling unit 200, 210), a detected signaling unit 200, 210 that is ahead is not taken into account in the automated longitudinal guidance of the vehicle 100 (and the vehicle 100 is therefore guided at a distance - and/or cruise control, in particular with the ACC driving function, is guided past the recognized signaling unit 200, 210). By taking actuation information into account, the availability and the comfort of the driving function can be increased in a safe manner. In particular, a comfortable override of the driving function (in a selective manner per signaling unit 200, 210) can be brought about in this way.

6a shows a flowchart of a further exemplary (possibly computer-implemented) method 600 for providing a driving function for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210. The method 600 includes the determination 601 of environmental information in relation to the environment in the direction of travel of the vehicle 100 ahead first signaling unit 200, 210. The environmental information can in particular include information relating to the road network in the vicinity of the first signaling unit 200, 210 and/or information relating to the node associated with the first signaling unit 200, 210.

Furthermore, the method 600 includes the operation 602 of the driving function for automated longitudinal guidance of the vehicle 100 on the first signaling unit 200, 210 depending on the environmental information. In particular, the degree of automation of the driving function can be adjusted as a function of the environmental information. The driving function can, for example, be operated in manual mode or in automatic mode depending on the environmental information on the first signaling unit 200, 210.

The convenience and availability of the driving function can be increased by taking environmental information into account, in particular environmental information in relation to the complexity of the road network and/or the node in the vicinity of first signaling unit 200, 210 when operating the driving function.

6b shows a flowchart of another exemplary (possibly computer-implemented) method 610 for providing a driving function for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210. The method 610 includes causing 611 that the vehicle 100 at a first signaling unit 200, 210 a following drive behind a vehicle in front. Within the scope of the following drive, the distance and/or speed of the vehicle 100 can be controlled.

The method 610 also includes the detection 612, based on environmental data from one or more environmental sensors 103 (in particular based on the image data of at least one camera) of the vehicle 100, a stop line at the first signaling unit 200, 210. The method 610 also includes the determination 613 of distance information relating to the time and/or spatial distance 311 of vehicle 100 to first signaling unit 200, 210 and/or to the detected stop line of first signaling unit 200, 210 /or be determined on the basis of the map data.

The method 610 also includes taking or not taking into account 614 the detected stop line in the automated longitudinal guidance of the vehicle 100 at the first signaling unit 200, 210 as a function of the distance information. In this way, the comfort and safety of the driving function can be increased.

6c shows a flowchart of a further exemplary (possibly computer-implemented) method 620 for providing a driving function for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210.

Method 620 includes determining 621, on the basis of environmental data from one or more environmental sensors 103 of vehicle 100, an environmental data-based distance to a first signaling unit 200, 210 ahead. The environmental data-based distance can in particular be based on the image data of at least one camera of the vehicle 100 can be determined (for example on the basis of a temporal sequence of images from the camera).

The method 620 also includes determining 622, on the basis of map data in relation to the road network traveled by the vehicle 100, a map data-based distance to the first signaling unit 200, 210 ahead. The map data-based distance can e.g. from the spatial distance between the position of the (stop line of) the first signaling unit 200, 210 displayed in the map data and the position of the vehicle 100 (measured using a position sensor, in particular a GPS receiver, of the vehicle 100).

Furthermore, the method 620 includes determining 623 an estimated value of the distance to the first signaling unit 200, 210 based on the environment data-based distance and based on the map data-based distance, in particular as a weighted average of the environment data-based distance and the map data-based Distance. The weighting can be changed as the vehicle gets closer to the first signaling unit 200, 210 (in particular it can be shifted from the map data-based distance to the environment data-based distance).

The method 620 also includes effecting 624 the automated longitudinal guidance (in particular the automated deceleration) of the vehicle 100 at the first signaling unit 200, 210 depending on the estimated value of the distance to the first signaling unit 200, 210. By considering the map data-based distance and the environmental data-based distance when determining the estimated value of the distance, a comfortable and safe approach, in particular deceleration, of the vehicle 100 can be brought about at the first signaling unit 200, 210.

6d shows a flowchart of another exemplary (possibly computer-implemented) method 630 for providing a driving function for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210. The method 630 comprises the following steps, which, repeated, at a time from a sequence of consecutive points in time. In particular, method 630 includes determining 631, based on environmental data from one or more environmental sensors 103 of vehicle 100 (in particular based on the image data of a camera), distance information relating to a spatial and/or temporal distance 311 of vehicle 100 to a upcoming first signaling unit 200, 210, and/or status information relating to a signaling status of the first signaling unit 200, 210.

Furthermore, the method 630 includes considering or not considering 632 the distance information and/or the status information in the automated longitudinal guidance of the vehicle 100 (in particular when performing an automated deceleration) at the first signaling unit 200, 210, depending on an estimated value of the spatial and/or temporal distance 311 of vehicle 100 from first signaling unit 200, 210. The estimated value of spatial and/or temporal distance 311 can be determined, for example, as described in connection with method 620.

As part of method 630, the distance information and/or the status information can be taken into account in the automated longitudinal guidance of vehicle 100 as long as the estimated value of spatial and/or temporal distance 311 is greater than a distance threshold value. On the other hand, the distance information and/or the status information can be disregarded or ignored during the automated longitudinal guidance of the vehicle 100 as soon as the estimated value of the spatial and/or temporal distance 311 is equal to or smaller than the distance threshold value. The distance threshold can be between 5m and 20m or between 0.5s and 2s, for example.

The convenience, robustness and safety of the driving function can be increased by selectively considering the distance information and/or the status information as a function of the distance 311 .

6e shows a flowchart of a further exemplary (possibly computer-implemented) method 640 for providing a driving function for automated longitudinal guidance of a vehicle 100 on a signaling unit 200, 210, the driving function having an automatic mode and a manual mode.

The method 640 includes the detection 641 of a plurality of signaling units 200, 210 in a sequential manner when the vehicle 100 is traveling. In other words, when the vehicle is traveling Vehicle 100 can be sequentially detected signaling units 200, 210 and possibly taken into account in the automated longitudinal guidance of the vehicle 100.

The method 640 also includes determining 642, for each of the plurality of signaling units 200, 210 on the basis of data relating to the respective signaling unit 200, 210 (in particular on the basis of the environment data and/or the map data), whether the driving function at the respective Signaling unit 200, 210 can be operated in automatic mode or only in manual mode. In particular, for each individual signaling unit 200, 210 it can (provisionally) be decided whether the driving function can or should be operated in automatic mode or in manual mode.

Method 640 also includes operating 643 the driving function on at least one first signaling unit 200, 210 from the plurality of signaling units 200, 210 in manual mode, although it was determined on the basis of the data relating to the first signaling unit 200, 210 that the first Signaling unit 200, 210 can be operated in automatic mode. In particular, a first signaling unit 200, 210 can be selected (possibly randomly or at least partially randomly, possibly repeatedly and/or periodically) on which (deviating from the usual or typical standard behavior of the driving function) the driving function is operated in manual mode , although the driving function could be operated in automatic mode (and should be operated in automatic mode according to the usual or typical default behavior of the driving function). In this way, a habit effect on the part of the driver of vehicle 100 can be reliably avoided and the driver's attentiveness can thereby be increased when monitoring the driving function.

Different aspects of an urban cruise control (UCC) driving function are described in this document, through which comfortable and safe automated longitudinal guidance (according to SAE Level 2) is provided, taking into account signaling units 200, 210.

The present invention is not limited to the exemplary embodiments shown. In particular, it should be noted that the description and the figures are only intended to illustrate the principle of the proposed methods, devices and systems.

Claims (15)

Vehicle guidance system (101) for providing a driving function for automated longitudinal guidance of a vehicle (100) on a signaling unit (200, 210); wherein the vehicle guidance system (101) is set up, - to determine environmental information relating to an environment of a first signaling unit (200, 210) ahead in the direction of travel of the vehicle (100); and - To operate the driving function for automated longitudinal guidance of the vehicle (100) on the first signaling unit (200, 210) depending on the environmental information. Vehicle guidance system (101) according to claim 1 , wherein the vehicle guidance system (101) is set up, - to determine a complexity measure for a complexity of the first signaling unit (200, 210) on the basis of the environmental information in relation to the environment of the first signaling unit (200, 210); and - to operate the driving function on the first signaling unit (200, 210) as a function of the determined degree of complexity. Vehicle guidance system (101) according to any one of the preceding claims, wherein the vehicle guidance system (101) is set up to determine the environmental information in relation to the environment of the first signaling unit (200, 210), on the basis of - Map data relating to a road network traveled by the vehicle (100); and or - Environment data relating to the environment of the first signaling unit (200, 210), wherein the environment data from one or more environment sensors (103) of the vehicle (100) were recorded. Vehicle guidance system (101) according to any one of the preceding claims, wherein the environmental information relating to the environment of the first signaling unit (200, 210) information relating to a with the first signaling unit (200, 210) associated node indicates, in particular in relation to - a type of node from a plurality of different node types; wherein the plurality of different node types includes in particular, - an intersection with three, four or more different streets; - a junction with two or more continuous roads; and or - a roundabout; and or - a number of different roads and/or directions of travel at the node. Vehicle guidance system (101) according to one of the preceding claims, wherein the environmental information relating to the environment of the first signaling unit (200, 210) indicates - a number of lanes of a road on which the vehicle (100) to the first signaling unit (200, 210) is approaching, - a type of road on which the vehicle (100) is approaching the first signaling unit (200, 210), from among a plurality of different road types; wherein the plurality of different road types comprises in particular: - a city road; - a country road; - an expressway; and/or - a driveway; - a number of possible directions of travel at a node associated with the first signaling unit (200, 210); and/or - a number of possible roads on which the vehicle (100) can travel away from the node associated with the first signaling unit (200, 210). Vehicle guidance system (101) according to one of the preceding claims, wherein the environmental information relating to the environment of the first signaling unit (200, 210) indicates information relating to a road network in the vicinity of the first signaling unit (200, 210), in particular in relation to a density of signaling units (200, 210) and/or traffic nodes in the road network in the vicinity of the first signaling unit (200, 210). Vehicle guidance system (101) according to any one of the preceding claims, wherein the environmental information relating to the environment of the first signaling unit (200, 210) indicates - whether a tunnel is arranged in the vicinity of the first signaling unit (200, 210), in particular on a roadway on which the vehicle (100) travels; - whether the roadway traveled by the vehicle (100) includes an access ramp, in particular an access ramp; - whether a bypass lane, in particular a bypass lane, for bypassing the first signaling unit (200, 210) is arranged in the vicinity of the first signaling unit (200, 210), in particular on the roadway traveled by the vehicle (100); and or - A distance of the first signaling unit (200, 210) to one or more other signaling units (200, 210). Vehicle guidance system (101) according to one of the preceding claims, wherein the vehicle guidance system (101) is set up - to determine on the basis of the environmental information whether a road network in the vicinity of the first signaling unit (200, 210) and/or a node associated with the first signaling unit (200, 210) has a high or a low complexity; and - to operate the driving function for automated longitudinal guidance of the vehicle (100) on the first signaling unit (200, 210) depending on whether the road network in the vicinity of the first signaling unit (200, 210) and/or the road connected to the first signaling unit (200, 210) associated node has a high or a low complexity. Vehicle guidance system (101) according to claim 8 , wherein the vehicle guidance system (101) is set up - to operate the driving function in a manual mode if it has been determined that the road network in the vicinity of the first signaling unit (200, 210) and/or with the first signaling unit (200, 210) associated node has high complexity; and/or - to operate the driving function in an automatic mode if it has been determined that the road network in the vicinity of the first signaling unit (200, 210) and/or the node associated with the first signaling unit (200, 210) has a low complexity. Vehicle guidance system (101) according to one of the preceding claims, wherein the vehicle guidance system (101) is set up - to determine map data relating to a road network traveled by the vehicle (100); - to check if - the first signaling unit (200, 210) is listed in the map data or not; and or - the map data include one or more attributes relating to a property, in particular a number of different signal groups, of the first signaling unit (200, 210); and - to operate the driving function for automated longitudinal guidance of the vehicle (100) on the first signaling unit (200, 210) also as a function of the check, in particular also as a function of the one or more attributes. Vehicle guidance system (101) according to one of the preceding claims, wherein the vehicle guidance system (101) is set up, - a degree of automation of the driving function as a function of the environmental information, in particular as a function of a complexity measure determined on the basis of the environmental information for a complexity of the first signaling unit (200, 210) to adjust; and/or - to operate the driving function in a manual mode if the complexity measure requires a comple xity of the first signaling entity (200, 210) greater than a complexity threshold; and/or - to operate the driving function in an automatic mode if the complexity measure indicates a complexity of the first signaling unit (200, 210) that is smaller than the complexity threshold value. Vehicle guidance system (101) according to any one of the preceding claims, wherein - The vehicle guidance system (101) is set up to operate the driving function on the first signaling unit (200, 210) depending on the environmental information in an automatic mode or in a manual mode; and - the first signaling unit (200, 210) is taken into account automatically in the automatic mode and in the manual mode only after confirmation by a user of the vehicle (100) in the automated longitudinal guidance of the vehicle (100). Vehicle guidance system (101) according to one of the preceding claims, wherein the vehicle guidance system (101) is set up in a manual mode of the driving function, - in particular via a user interface (107) of the vehicle (100), an offer relating to the consideration of the first signaling unit (200, 210) in the automated longitudinal guidance of the vehicle (100) to a user of the vehicle (100); and - to consider the first signaling unit (200, 210) in the automated longitudinal guidance of the vehicle (100) at the first signaling unit (200, 210) if the offer is accepted by the user; and or - Not to consider the first signaling unit (200, 210) in the automated longitudinal guidance of the vehicle (100) at the first signaling unit (200, 210) if the offer is not accepted by the user. Vehicle guidance system (101) according to one of the preceding claims, wherein the vehicle guidance system (101) is set up when the first signaling unit (200, 210) is taken into account in the automated longitudinal guidance of the vehicle (100), - On the basis of environment data in relation to the first signaling unit (200, 210), in particular on the basis of a color of a light signal of the first signaling unit (200, 210) indicated by the environment data, to determine whether the vehicle (100) is at the first signaling unit (200, 210), in particular at a stop line of the first signaling unit (200, 210), must stop or not; and - causing the vehicle (100) to stop automatically at the first signaling unit (200, 210) if it is determined that the vehicle (100) must stop at the first signaling unit (200, 210); and or - cause the vehicle (100) to be automatically guided past the first signaling unit (200, 210), in particular over the stop line of the first signaling unit (200, 210), if it is determined that the vehicle (100) is not of the first signaling unit (200, 210). Method (600) for providing a driving function for automated longitudinal guidance of a vehicle (100) on a signaling unit (200, 210); the method (600) comprising - determining (601) environmental information relating to an environment of a first signaling unit (200, 210) ahead in the direction of travel of the vehicle (100); and - Operating (602) the driving function for automated longitudinal guidance of the vehicle (100) on the first signaling unit (200, 210) as a function of the environmental information.

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