DE102012009238A1 - Method for predictive longitudinal guide of vehicle e.g. motor car, involves providing control commands for longitudinal guide of target vehicle to vehicle driver assistance system based on external information - Google Patents

Abstract

The external information including position data, transaction data, information about a profile of a roadway curve before target vehicle (10), etc, is transferred from information generating vehicle (60) to receiving unit (40) through vehicle-to-vehicle communication interface. The external information is analyzed and the driving recommendations for longitudinal guide of target vehicle are output based on external information. The control commands for longitudinal guide of target vehicle are provided to vehicle driver assistance system (35) based on external information. An independent claim is included for vehicle driver assistance system.

Description

The invention relates to a method for longitudinal guidance of the vehicle taking into account communication with vehicles in front, corresponding devices for carrying out the method, and vehicles, in particular motor vehicles, in which the method is carried out or which comprise a corresponding device.

The longitudinal guidance of vehicles is increasingly supported by additional methods and corresponding driver assistance systems, in particular with the aim of improving the driving economy or increasing driving safety.

From the DE 10345319 A1 A method is known for the predictive longitudinal control of a vehicle, wherein the environmental parameters, vehicle parameters, vehicle operating parameters and route parameters are used to optimize the control parameters of the scheme in terms of fuel consumption and ride comfort and safety. The route parameters are determined using digital map data.

From the DE 102010007240 A1 A method for determining the course of a traffic lane in front of a vehicle is known in which the lane tracking is based on lane course data, which are determined by a preceding vehicle and transmitted to the vehicle.

From the DE 102008019174 A1 It is known that the driving strategy of a vehicle can be optimized with regard to the reduction of fuel consumption when performance, speed and position data of a preceding vehicle, which receives the vehicle from the vehicle in front via a vehicle-vehicle communication interface, in the regulation of the longitudinal movement of the vehicle be taken into account.

From the DE 19949448 A1 A method for controlling the driving state of a vehicle is known in which, in order to increase driving safety, state and operating variables of a preceding vehicle which receives the controlled vehicle from the preceding vehicle are taken into account in the regulation. The state and operating variables include measured quantities and nominal values of the preceding vehicle, in particular data on the position, speed, speed change, deceleration capability, slip angle, steering angle and visibility and weather data.

From the DE 10029816 A1 a method for the longitudinal control of a vehicle is known in which vehicle status communication data (FCD, X-FCD) are detected by preceding vehicles via a vehicle-vehicle communication interface or via a vehicle infrastructure communication interface in order to determine thereon an optimal driving strategy, the is aimed at avoiding as unnecessary acceleration and braking operations, and in which the longitudinal control is performed according to the determined optimal driving strategy. The acquired operating state data of the preceding vehicles provide information about the positions and the traffic behavior of the preceding vehicles, such. As blinker operations, distances to other road users, acceleration behavior, braking behavior, motion states (speed).

The object of the present invention is to provide further methods for longitudinal guidance of vehicles and corresponding driver assistance systems. The object is achieved by a method having the features of the main claim, a driver assistance system having the features of the first subsidiary claim and vehicle, in particular a motor vehicle having the features of the further subsidiary claim.

The invention accordingly relates, in a first aspect, to a method for the predictive longitudinal guidance of a vehicle taking into account external information generated outside the vehicle, which is referred to below as a longitudinally guided vehicle in the context of the invention. In a method step a), the external information is transmitted via a vehicle-vehicle communication interface from at least one information-generating vehicle located on the same route in the same direction of travel in front of the longitudinal vehicle to the longitudinal vehicle. The external information includes at least position data and movement data of the information generating vehicle, and in addition at least one of the following information selected from information about the cornering profile of a lane ahead of the longitudinally guided vehicle; Information about the pitch profile of a road ahead of the longitudinally guided roadway; Information about the lateral acceleration of the at least one information-generating vehicle located in front of the longitudinally-guided vehicle; Information about the movement of detected objects; Track information; Weather information; Traffic sign information; and signaling information. In a method step b), an analysis of the external information takes place. In a process step c1) are then on the Based on the external information on an output means driving recommendations for the longitudinal guidance of the longitudinally guided vehicle output, and / or generated in a step c2) on the basis of the external information control commands for engagement in a subordinate driver assistance system for longitudinal guidance of the longitudinally-guided vehicle.

The external information is generated outside of the longitudinally-guided vehicle and, taking into account the driving speed of the longitudinal vehicle, enables a forward-looking guidance such that depending on the current circumstances of the particular location where the external information was generated and which are described by this external information, looking ahead, the best possible vehicle condition of the longitudinally guided vehicle can be adjusted. In the analysis in method step b), the driving state of the longitudinally guided vehicle is accordingly determined on receipt of the external information, for example via suitable sensors, such as sensors for measuring the vehicle speed, the engine speed, the front wheel angle, the engaged gear, the yaw rate, the lateral acceleration, Radschlupfs, the current direction, current or intended route, and the like. The transmitted external information about the position and movement data contained therein provide information on the driving state of the information-generating vehicle when sending the external information and possibly on the driving environment of the information-generating vehicle, such as weather information or information on detected objects. Based on the vehicle speed and the travel route of the longitudinal vehicle, it can be determined by comparing with the external information of the information generating vehicle and the position and movement data of the information generating vehicle contained therein when the longitudinal vehicle will reach the position on the route on which the information generating vehicle when sending the external information. By comparing the current vehicle state of the longitudinally guided vehicle with the external information, it is possible to determine whether or which changes in the vehicle state of the longitudinally-guided vehicle are to be made in order to have the vehicle state that is as optimal as possible for this position when this position is reached. Accordingly, on the basis of the external information in a step c1) on an output means, the output of driving recommendations for the longitudinal guidance of the longitudinally-guided vehicle, and / or in a process step c2) are based on the external information, the control commands to engage in subordinate driver assistance system for longitudinal guidance of the longitudinally guided vehicle generated. For example, if external information indicates a steep grade within a few hundred meters, a corresponding output on the output means may warn the driver of the upcoming downgrade. Alternatively or additionally, the driving speed of the longitudinally guided vehicle can be reduced in a forward-looking manner via a subordinate driver assistance system and a low gear can be engaged in order to ensure a safer driving speed and a greater braking potential when reaching the downward gradient.

In further embodiments of the method, it is provided that the driver can specify via responsive input means whether a driving recommendation is to be output or whether, alternatively or additionally, an intervention in a driving assistance system should take place.

Commercially available technical solutions can be used as vehicle-vehicle communication interfaces, for example direct communication between vehicles by means of radio waves, or indirect communication between the vehicles, for example via one or more central control stations, WLAN networks or mobile radio networks. Accordingly, the longitudinally guided vehicle comprises at least one receiving means, preferably also a transmitting means.

An identical route is when the longitudinal vehicle and the information generating vehicle travel the same road in the same direction, or the information generating vehicle is already on another road but is provided in the route of the longitudinal vehicle. Advantageously, the longitudinally-guided vehicle has a vehicle navigation system for defining its own driving route and for classifying information-generating vehicles as being located on its own driving route or not. Preferably, the external information is taken into account for information-generating vehicles ranging from a few meters to dozens of meters in range, and / or a dozen to a hundred meter range, and / or over a range of hundreds to hundreds of meters Kilometers ahead of the longitudinal vehicle. The corresponding distances between the longitudinally-guided vehicle and the information-generating vehicle can be determined via the position data and movement data, which in any case are included among the external information transmitted by the information-generating vehicle.

In addition to position data and movement data of the information-generating vehicle, the external information comprises one or more additional information.

For example, this is information about the curve profile of a lane ahead of the longitudinally guided vehicle. In each case, the information-generating vehicle currently determines the curve profile of the road it has traveled, for example on the basis of front wheel impacts, which in turn can be measured by corresponding sensors, and transmits the information about the curve profile to the longitudinally guided vehicle. Since the longitudinally guided vehicle is located on the same route as the information-generating vehicle, the longitudinally-guided vehicle will reach the positions of the roadway as the journey progresses, which correspond in each case to the curve profiles transmitted by the information-generating vehicle. Taking into account the information transmitted to the respective curve profile of a position to be reached by the longitudinally-guided vehicle, the method generates a curve behavior tuned to the longitudinally guided vehicle in a forward-looking manner, either by issuing driving recommendations to the driver or by intervening in corresponding subordinate driver assistance systems.

Further possible information relates to the pitch profile of a lane ahead of the longitudinally-guided vehicle, that is to say its gradient sections or its inclines. This can be determined by information-generating vehicle either directly via corresponding inclination sensors, or indirectly via the engine and / or transmission management. For example, an inferred lower gear and a higher rotational speed, in particular at a substantially non-increasing speed, suggest that the information-generating vehicle is driving on a gradient. Advantageously, the measures taken in the information-generating vehicle during engine and / or transmission management, if necessary after adaptation to the characteristics of the longitudinally guided vehicle, such as its engine power and its gear ratio, are taken as a template for the engine and / or transmission management of the longitudinally guided vehicle, since it can be assumed that the information-generating vehicle is operated so that it should cope with the slope profile of the road in the most ideal way possible.

Further possible information relates to the lateral acceleration of at least one information-generating vehicle located in front of the longitudinally guided vehicle, which can be measured via corresponding acceleration sensors. The lateral acceleration allows conclusions on curve radii of the information-generating vehicle just traveled lane and can thus complement the above-mentioned information to the curve profile or put on a broader data base. Furthermore, the determination of a lateral acceleration allows conclusions about lane changes of the information-generating vehicle, in turn, allow conclusions about road obstacles, which the information-generating vehicle evades the lane change, or on the further route of the information-generating vehicle, which could eventually leave the route of the longitudinal vehicle and thus in the future would no longer be considered as an information-generating vehicle.

Other possible information relates to those for the movement of detected objects. Such objects can be detected via object recognition systems, for example via RADAR or LIDAR sensors, or via optical camera systems with downstream image processing. Taking into account the intrinsic speed of the information-generating vehicle, the movement speed and the instantaneous position of detected objects in the surroundings of the information-generating vehicle can be determined via Doppler effects or sequential position determination at different times, for example, and this information is transmitted to the longitudinally-guided vehicle. On the basis of this information, the method determines whether or when a detected object must be taken into account for the travel route of the longitudinally guided vehicle, for example because it is likely to constitute an obstacle on the same roadway, such as an object moving on the same roadway in the same direction of travel lower speed or because it will intersect the route of travel of the longitudinally-guided vehicle, such as a vehicle located on a road crossing the route of the longitudinal vehicle and thus theoretically in collision with the longitudinal vehicle. A particular example of information about moving objects are on the opposite lane oncoming vehicles, which can jeopardize in particular planned overtaking maneuvers of the longitudinally guided vehicle. The transmission of the movement information about such an oncoming vehicle allows an estimate in the longitudinal vehicle, whether or to which position on the route ahead overtaking is still safe.

Furthermore object distances of still objects can be detected via the above-mentioned object recognition systems, for example roadway constrictions caused by construction sites or parking vehicles, which must be taken into account in the longitudinal guidance. Also recognizable are turn signal or brake light actuations of preceding vehicles, which, for example, indicate road impairments caused by turning vehicles and can be taken into account in the longitudinal guidance, for example by anticipatory reduction in the speed of the longitudinally-guided vehicle.

Other possible information relates to lane information. An information-generating vehicle can detect, for example via optical camera systems with downstream image processing, the number and the respectively permitted directions of travel of lanes of the route currently being traveled and, by transmitting this information to the longitudinal vehicle, enable its early selection of an optimal lane. When a longitudinally-guided vehicle travels about a single lane leading to an uphill section, and a preceding information-generating vehicle transmits the single lane into two lanes on the uphill section to give passenger vehicles an overtaking facility with respect to lorries, this early-obtained information enables the timely information to be obtained To mobilize reserve power in order to be able to switch from the point where the second lane is available and to overtake slower vehicles.

Further possible information relates to weather information that can be determined via corresponding sensors of an information-generating vehicle. For example, rain sensors or fog sensors indicate the occurrence of rain or fog on route sections ahead from the view of the longitudinally guided vehicle. Temperature sensors can indicate dangerous temperature ranges at an early stage, such as those where slippery roads are in danger, and lateral acceleration sensors, in particular in conjunction with sensors for measuring front wheel wards, can detect lateral dislocations of the information-generating vehicle that suggest crosswinds. The transmission of this information to the longitudinally guided vehicle allows vorrauschauende longitudinal guidance of this vehicle, taking into account the risk potential of prevailing on the route ahead weather conditions. For example, a driving recommendation for reducing the driving speed can be output or such a reduction can be initiated via a driver assistance system itself if road slipperiness due to ice or rain is to be expected on the route ahead.

Other possible information relates to traffic sign information and / or signal sign information. Such information can be determined via optical camera systems with downstream image processing in the information-generating vehicle. For example, it can be determined via the method by detection of traffic signs that the maximum permissible speed is reduced or the information-generating vehicle is approaching a stop sign or a roundabout. This information is transmitted to the longitudinal vehicle, where via an output means a corresponding driving recommendation is issued to reduce the speed, or a speed reduction takes place via a control command to a subordinate driver assistance system. Analog can be detected by information-generating vehicle signal signs, such as a green to yellow switching traffic light or a flashing warning light at a railroad crossing, and this information is transmitted to the longitudinally-controlled vehicle, which proposes as a forward-looking longitudinal guidance speed reduction to a standstill or self-initiated.

The output device may be any known device, in particular any audible, visual or audiovisual device, such as a loudspeaker for outputting a voice message or a screen for outputting a message in written or graphic form. Also suitable are haptic output means, such as surfaces on the steering wheel, which vibrate as an indication of an imminent danger situation.

As a subordinate driver assistance system in which an intervention is performed by means of control commands generated on the basis of the external information, any assistance system used in connection with the longitudinal guidance of a vehicle can be used. In particular embodiments, the child driver assistance system is selected from a shift display, a cruise control, an automatic distance control and an engine management system for an automatic transmission. For example, switching recommendations for the choice of the gear to be used and / or the speed recommendations can be output in the context of the method according to the invention via shift indications. Examples of other child driver assistance systems are cruise control or automatic distance control systems (also known as ACC systems) that are set to a reasonable or allowable speed based on information transmitted by the information generating vehicle. For example, engine management systems for automatic transmissions may be proactively controlled based on the information about ahead road sections such that more mileage ahead of timely hill sections ahead or is made available in good time before more engine braking effect of preceding slope sections.

The information-generating vehicle can in principle be any vehicle in the direction of travel in front of the longitudinally-guided vehicle on the same route. According to a particular embodiment, this is the first vehicle in the direction of travel in front of the longitudinally guided vehicle. Its information is of the highest priority to the longitudinally-guided vehicle because it describes route positions that the longitudinal vehicle will next reach, so that a predictive longitudinal guide must first take into account this transmitted information. The transmission of the information between the information-generating and the longitudinally guided vehicle is preferably carried out directly between the two vehicles, but can also take place via a third station, such as a central office.

According to a further particular embodiment, one or more further vehicles are located between the longitudinally guided vehicle and the information-generating vehicle, the information of the information-generating vehicle being transmitted via the one or more vehicles as an intermediate station or intermediate stations to the longitudinally-guided vehicle. In this way, external information is transferred to the longitudinally guided vehicle, which relate to far-ahead route sections and enable a long-term, forward-looking longitudinal guidance. The acting as intermediate stations further vehicles can join with the longitudinally guided vehicle, for example, in the context of a spontaneous network, the vehicles exchange their respective travel routes and current positions on the routes with each other. In the process, vehicles located in the same direction on the same route join together to form a spontaneous network. Preferably, the networks relate to vehicles located in the small, medium or larger range of distances discussed above because information relevant to the longitudinal vehicle may be generated within those ranges of distance, while information from even farther distant vehicles, approximately tens of kilometers away, may be generated become relevant after a long journey for the longitudinally guided vehicle and could be out of date on reaching the appropriate positions. Of course, the one or more multiple vehicles between the longitudinally-guided and information-generating vehicles may also be information-generating vehicles. For example, a first vehicle located in front of a longitudinally-guided vehicle may be an information-generating vehicle that transmits information generated by itself to the longitudinally-guided vehicle. Before this first vehicle may be a second vehicle, which is also an information-generating vehicle, but can not make a direct transfer of external information to the longitudinally guided vehicle due to the distance or transmission obstacles, but transmits them via the first vehicle as an intermediate station to longitudinally-controlled vehicle. The longitudinal vehicle thus has external information of the first vehicle that becomes relevant first, since the longitudinal vehicle will first reach initial positions of the first vehicle on which the external information was generated, and external information of the second vehicle, which will be relevant later because the original position of the second vehicle is later reached by the longitudinal vehicle. The combination of the external information of the first and the second vehicle, however, allows a far-sighted longitudinal guidance in the longitudinally guided vehicle.

The invention relates in a second aspect to a driver assistance system in a longitudinally guided vehicle for carrying out a method according to the invention, reference being likewise made to the implicit or explicit disclosures made in the context of the above method via such a driver assistance system. This driver assistance system comprises a receiving means, via the external information of an information-generating vehicle, which are designed as in the context of the method according to the invention are receivable in the longitudinally guided vehicle, further an analysis means, by means of which the received external information evaluable and based on driving recommendations and / or Control commands for a subordinate driver assistance system for longitudinal and / or transverse guidance of the vehicle can be generated, and an output means for outputting the driving recommendations on the basis of the external information, and / or at least one subordinate driver assistance system for longitudinal guidance of the vehicle, with which the generated control commands can be implemented ,

As a receiving means, which is advantageously designed simultaneously as a transmitting means to make contact with information-generating vehicles or traffic centers, for example, any known digital or analog technical solution comes into question. The analysis means can be implemented in the usual way, for example as independent control electronics of the driver assistance system or by means of a vehicle central computer. In a vehicle central computer (also called on-board computer) usually run anyway collected data of the longitudinally guided vehicle together and are analyzed there. In the context of the driver assistance system according to the invention, the information transmitted to the receiving means is taken into account.

Examples of output means are the acoustic, visual or audiovisual device mentioned in the context of the method according to the invention, for example loudspeakers for outputting a voice message or screens for outputting a message in written form or graphic form, as well as haptic devices for outputting a haptic signal.

Driver assistance systems which are subordinate to the driver assistance system according to the invention and into which intervention takes place by means of control commands generated on the basis of the external information, one or more of the subordinate driver assistance systems mentioned in connection with the method according to the invention can be used. In particular embodiments, these are selected from among a shift display, cruise control, automatic ranging control, and an automatic transmission engine management system.

In a third aspect, the invention relates to a vehicle, in particular a motor vehicle, in which a method according to the invention is carried out or which comprises a driver assistance system according to the invention

Further advantages, features and details will become apparent from the following description of the figures and the examples in which, where appropriate, with reference to the figures, embodiments are described in detail. Described and / or illustrated features form the subject of the invention, or independently of the claims, either alone or in any meaningful combination, and in particular may additionally be the subject of one or more separate applications. The same, similar and / or functionally identical objects are provided with the same reference numerals.

Showing:

1 a schematic flow diagram of a method according to the invention

2 a schematic representation of a parent driver assistance system in a motor vehicle

3 a schematic representation of a driving situation using the method according to the invention or the driver assistance system according to the invention

4 a schematic representation of another driving situation using the method according to the invention or the driver assistance system according to the invention

In the in 1 shown schematic flow diagram of the method according to the invention is carried out in a process step a) ( 100 ) a transmission of external information to a longitudinally guided vehicle 10 , There, the information in an analysis step b) ( 200 ) and based on the external information in a step c1) ( 300 ) on an output means 20 Driving recommendations issued, so that a forward-looking longitudinal guidance takes place when the driver takes the driving recommendations and implemented in his driving. Alternatively or additionally, on the basis of the external information in a method step c2) ( 400 ) Control commands for engaging a subordinate driver assistance system 35 generated for longitudinal guidance of the vehicle. By means of these control commands, a predictive longitudinal guidance is thus carried out by the subordinate driver assistance system 35 ,

2 shows a schematic representation of a parent driver assistance system 30 , This includes a receiving means 40 with which a vehicle-vehicle communication interface is formed and symbolized by a dashed arrow and by an information-generating vehicle 60 transmitted external information is transmitted. These are in an analysis tool 50 analyzed. As a result of the analysis will be on an output means 20 Issued driving recommendations, and / or generates control commands, with which in a subordinate driver assistance system 35 is intervened.

In 3 is shown a schematic driving situation. From an information-generating vehicle 60 Be external information to one with a driver assistance system 30 equipped for longitudinal guidance vehicle 10 transferred to the information-generating vehicle 60 follows. The transmitted external information is symbolized by a dashed arrow, details of the driver assistance system 30 , such as the receiving means 40 , are not shown for clarity. Driving directions of the vehicles 10 . 60 are each symbolized by solid arrows. The information-generating vehicle 60 is currently driving in a left turn. The external information includes, in addition to the position data and the movement data of the information generating vehicle 60 also information about the front wheel lock. From the own position of the longitudinally guided vehicle 10 and its speed as well as the current position of the information generating vehicle 60 can be determined when the longitudinally guided vehicle 10 will reach the bend. The information about the front wheel angle point to the curve radius, so that a driving recommendation can be output in a forward looking longitudinal guidance of the vehicle, which points to a sharp left turn. In addition, from the movement data of the information-generating vehicle 60 be closed to an allowable cornering speed, where appropriate, the characteristics of the longitudinally guided vehicle with the optionally transmitted as external information characteristics of the information-generating vehicle 60 be compared. Indicates the longitudinal vehicle 10 For example, a significantly higher mass than the information-generating vehicle 60 On, the maximum permissible cornering speed is correspondingly reduced in order to avoid understeering or even breaking out of the curve.

In 4 is shown another schematic driving situation. In front of the longitudinally guided vehicle 10 with a driver assistance system 30 drives an information-generating vehicle 60 , which pivots following the road course in a right turn. The corresponding external information is transmitted via a vehicle-vehicle communication interface, for which the receiving means not shown for the sake of clarity 40 of the driver assistance system 30 represents a component. The front wheel lock of the information generating vehicle 60 Figure 1 shows a sharp left turn immediately from the longitudinally guided vehicle 10 following sharp right curve and thus allows a forward-looking longitudinal guidance. Before the information generating vehicle 60 There is another information generating vehicle 60 from which, due to a rock massif symbolized by oblique hatching, there is no direct transmission of external information to the longitudinally-guided vehicle 10 is possible. In this case, this acts immediately in front of the longitudinally guided vehicle 10 located information generating vehicle 60 as another vehicle 70 that as an intermediate station symbolized by semicolons external information of the driving ahead of him information-generating vehicle 60 to the longitudinally guided vehicle 10 transmits

LIST OF REFERENCE NUMBERS

10

longitudinally guided vehicle

20

output means

30

Driver assistance system for longitudinal guidance

35

subordinate driver assistance system

40

receiving means

50

analysis means

60

Information generating vehicle

70

another vehicle

100

Process step a)

200

Process step b)

300

Process step c1)

400

Process step c2)

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10345319 A1 [0003]
• DE 102010007240 A1 [0004]
• DE 102008019174 A1 [0005]
• DE 19949448 A1 [0006]
• DE 10029816 A1 [0007]

Claims (8)

Method for the predictive longitudinal guidance of a vehicle taking into account external information which is outside the vehicle ( 10 ), comprising: a) the transmission of the external information via a vehicle-vehicle communication interface of at least one on the same travel route in the same direction of travel in front of the longitudinally-guided vehicle ( 10 ) information generating vehicle ( 60 ) to the longitudinally guided vehicle ( 10 ), wherein the external information at least position data and movement data of the information-generating vehicle ( 60 ) and in addition at least one of the following information: - information about a curve profile of a front of the longitudinally guided vehicle ( 10 ), information on a gradient profile of a longitudinally-guided vehicle ( 10 ), information on a lateral acceleration of the at least one ahead of the longitudinally guided vehicle ( 10 ), the information generating vehicle ( 60 ), - information about a movement of detected objects, - lane information, - weather information, - traffic sign information, and / or - signal sign information, b) an analysis of the external information, c1) on the basis of the external information on an output means ( 20 ) the output of driving recommendations for the longitudinal guidance of the longitudinally guided vehicle ( 10 ), and / or c2) based on the external information, the generation of control commands for engaging in a subordinate driver assistance system ( 35 ) to the longitudinal guide of the longitudinally guided vehicle ( 10 ). Method according to claim 1, characterized in that the output means ( 20 ) is selected from a visual, audible, audiovisual and / or haptic output means. Method according to Claim 1 or Claim 2, characterized in that the subordinate driving assistance system ( 35 ) is selected from a shift display, a cruise control, an automatic distance control and an engine management system for an automatic transmission. Method according to one of claims 1 to 3, characterized in that the information-generating vehicle ( 60 ) the first in the direction of travel in front of the longitudinally guided vehicle ( 10 ) is located vehicle. Method according to one of claims 1 to 3, characterized in that between the longitudinally guided vehicle ( 10 ) and the information generating vehicle ( 60 ) are one or more other vehicles, the information of the information generating vehicle ( 60 ) about the one or more vehicles as an intermediate station or intermediate stations to the longitudinally guided vehicle ( 10 ) be transmitted. Driver assistance system ( 30 ) in a longitudinal vehicle ( 10 ) for carrying out a method according to one of the preceding claims, comprising: - a receiving means ( 40 ), via the external information of an information-generating vehicle ( 60 ) in the longitudinal vehicle ( 10 ) are receivable, - an analysis means ( 50 ), by means of which the received external information can be evaluated and on the basis of which driving recommendations and / or control commands for the driver assistance system ( 30 ) to the longitudinal guidance of the vehicle ( 10 ), and - an output means ( 20 ) for outputting the driving recommendations on the basis of the external information, and / or at least one subordinate driver assistance system ( 35 ) to the longitudinal guidance of the vehicle, with which the generated control commands can be implemented, characterized in that the external information in addition to position and movement data of the information-generating vehicle additionally comprise at least one of the following information: - Information on the curve profile of a longitudinally-guided vehicle ( 10 ), information on the pitch profile of a longitudinally-guided vehicle ( 10 ), information on the lateral acceleration of the at least one ahead of the longitudinally guided vehicle ( 10 ), the information generating vehicle ( 60 ), - information about movement of detected objects, - lane information, - weather information, - traffic sign information, and / or - signal sign information. Driver assistance system ( 30 ) according to claim 6, characterized in that the at least one subordinate driver assistance system ( 35 ) is selected from a shift display, a cruise control, an automatic distance control and an engine management system for an automatic transmission. Vehicle, in particular motor vehicle, in which a method according to one of claims 1 to 5 is carried out or which is a driving assistance system ( 30 ) according to one of claims 6 or 7.

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