DE102016214916B4 - Method for operating a motor vehicle and motor vehicle - Google Patents

Abstract

Method for operating a motor vehicle (10) in which the motor vehicle (10) drives autonomously and in which at least one maneuver currently being carried out by the motor vehicle (10) and / or at least one imminent maneuver on a display (24) of the motor vehicle (10) Maneuver is represented, wherein a control device (18) of the motor vehicle (10) causes a lane change to be carried out as the at least one maneuver, the control device (18) for a plurality of predetermined reasons (44, 46, 48) for the lane change selects a reason (44), wherein the selected reason (44) is communicated to an occupant (12) of the motor vehicle (10), characterized in that the selected reason (44) by means of a plurality of characters in the form of letters comprising words or by means of a text is shown on the display (24).

Description

The invention relates to a method for operating a motor vehicle, in which the motor vehicle drives autonomously. On a display of the motor vehicle, at least one maneuver just performed by the motor vehicle and / or at least one upcoming maneuver is shown. A control device of the motor vehicle causes a lane change to be carried out as the at least one maneuver. The invention further relates to a motor vehicle.

Technological progress in the field of highly automated driving and fully automated driving allows vehicles to take over the longitudinal and lateral guidance of the motor vehicle to an increasing extent when certain environmental conditions exist. A driver of the motor vehicle then no longer has to monitor the autonomous system permanently for a given period of time. Rather, the driver can deal with other tasks during this time. This means that the driver no longer has a permanent understanding of the traffic situation and the behavior of the motor vehicle when driving autonomously.

It is used for example in the DE 10 2011 121 948 A1 The method described informs a motor vehicle driver of a driving maneuver planned and carried out by the motor vehicle using a driver assistance system. The driver assistance system cyclically records the current traffic situation on the basis of environmental data and plans a driving maneuver based on the captured environmental data. The driving maneuver is shown in a picture on a display.

With such a method, the driver is only informed about the result of the planning.

In contrast, they describe US 9 132 840 B1 and the US 8 738 213 B1 an autonomous vehicle, in which a computer displays symbols and images on a screen, which are intended to enable a vehicle occupant to understand what actions the vehicle will take in the near future. For example, a stop sign can be displayed at an intersection towards which the vehicle is moving. Part of a path that shows the movement of the vehicle on the display is then hatched. The hatching indicates that the computer has the vehicle stop at the stop sign for a certain period of time. Text can also be displayed on the screen to indicate that the vehicle is waiting. When the computer determines that a lane change is appropriate, the computer displays a turn sign on the screen indicating that the vehicle will change lanes. This method also needs to be improved with regard to the traceability of the autonomously carried out maneuvers of the vehicle.

Also the DE 10 2013 016 242 A1 discloses a method for an autonomously driving vehicle in which future driving maneuvers are displayed. The display also contains information on the situation and necessary driver intervention.

From the DE 10 2011 121 948 A1 there is also known a method for a vehicle with a display that shows a current or future maneuver. The maneuver can be a change of lane. To display the situation, other environmental data and relevant, marked objects are displayed.

The object of the present invention is therefore to create a method and a motor vehicle of the type mentioned at the beginning, by means of which a better understanding of an autonomously performed maneuver can be achieved.

This object is achieved by a method with the features of patent claim 1 or 2 and by a motor vehicle with the features of patent claim 9 or 10. Advantageous refinements with expedient developments of the invention are specified in the dependent claims.

In the method according to the invention for operating a motor vehicle, the motor vehicle drives autonomously. On a display of the motor vehicle, at least one maneuver just performed by the motor vehicle and / or at least one upcoming maneuver is shown. A control device of the motor vehicle causes a lane change to be carried out as the at least one maneuver. The control device selects a reason from a plurality of predetermined reasons for the lane change. The selected reason is communicated to an occupant of the motor vehicle. The occupant of the motor vehicle, in particular the driver, is thus supported in his understanding of the automated driving function. This enables the driver to build trust in the automated driving function, that is, in the autonomous driving mode of the motor vehicle. This is because the driver has the option of recognizing, understanding and, if necessary, anticipating the behavior of the motor vehicle driving autonomously or automatically, on the basis of the display of both the maneuver and the reason for the maneuver.

In the case of a lane change in particular, it is important if the occupant of the motor vehicle or the driver can understand the reason for the lane change that has just been carried out or is imminent. As a result, the driver gains confidence in the motor vehicle that changes autonomously to an adjacent lane, so that the driver remains particularly relaxed during autonomous driving and does not become hectic or panicked. This is particularly important when the driver takes over manual vehicle guidance again in certain situations. In that case, increased driving safety can be achieved, since the driver can guide the motor vehicle particularly safely manually due to the better understanding of the maneuvers previously carried out autonomously.

The driver is therefore preferably shown the results of decision-making processes which lead to the maneuver being carried out autonomously. This is done by communicating the selected reason to the driver or occupant.

In other words, the occupant or driver is not only informed of what is happening, that is to say which maneuver is being carried out autonomously by the motor vehicle, but also why this maneuver is being carried out. In particular in the case of highly automated and therefore comparatively largely autonomous driving of the vehicle, communicating the selected reason is advantageous. With this highly automated driving, the driver does not have to continuously monitor the system. However, here the driver is asked to take over the manual control of the motor vehicle, for example if the complexity of the driving situation becomes too high for a continuation of the autonomous driving.

In the case of the highly automated motor vehicle, in particular, there is an advantage in constantly conveying the reasons for the motor vehicle's behavior. The driver does not need to constantly monitor the system. However, it is advantageous if the driver is familiar with the capabilities and limits of the system. This is achieved by communicating the reason selected from the plurality of predetermined reasons. With the help of communication, in particular an indication, the selected reasoning for a respective maneuver, a better understanding of the system can be built up than would be possible with a pure representation of the environment.

The driver is therefore provided with information in the form of the reasons, which are present in the control device and have resulted in the control device causing a certain maneuver to be carried out. However, the control device allows the occupant or driver to participate in this decision process by communicating the reason. This can ensure that the driver has a good understanding of the capabilities and limits of the system. The driver can therefore check at any time during the autonomous drive whether the system is able to adequately respond to the current traffic situation or whether the system will respond to it.

Since the selected reason is communicated in the respective driving situation, this is considerably more catchy for the driver or occupant than if information about the capabilities and limits of a highly automated driving system is obtained from a log book or operating instructions. Furthermore, this is significantly less complex than if the system capabilities or system limits are explained or explained before the journey, in particular before the first journey, with the highly automated motor vehicle.

As a reason for the lane change, it can be stated that an overtaking of another vehicle is achieved by this. In this case, the lane change serves to gain a speed advantage. If it is communicated to the occupant or driver that the lane change serves to overtake the further vehicle, this is immediately understandable to the driver. If the driver also sees the other vehicle to be overtaken in the vicinity and / or on the display, it can be largely excluded that the driver assumes an error in the autonomously driving motor vehicle as the reason for the lane change. This is conducive to the understanding of the autonomously performed maneuver and an increased confidence in the autonomously driving motor vehicle.

As an alternative, the reason for the lane change can be stated that it follows a command to use a certain lane. For example, in a number of countries with right-hand traffic, a right-hand driving bid applies, in particular the bid to use the right-hand lane on several roads if possible. The right-hand drive command can therefore state that there is no motivation to maintain the current lane, but rather to switch to the (for example right) lane, in accordance with the processing of acquired environmental data carried out by the control device. The bid may also be due to the fact that, for example due to a narrowing of the carriageway, fewer lanes (or only one lane) can be driven at all. The commandment can also come from making room for a following, faster-moving vehicle by dodging on the specific lane. Even in such a case, it is advantageous to communicate the justification that is valid for this lane change, in order to provide the driver with an improved understanding of the autonomously performed maneuver.

Alternatively, it can be stated as a reason for the lane change that an arrangement for driving to a destination determined by means of a navigation system of the vehicle is achieved. In the case of such a lane change owing to the navigation, this is necessary in order to reach the desired destination. Even in such a case, communicating the reason for the lane change serves to better understand the autonomously performed maneuver.

The control device of the motor vehicle preferably has the effect that at least one longitudinal guidance maneuver is carried out autonomously after the lane change and / or before the lane change. Here, the control device selects at least one reason from a plurality of predetermined reasons for the longitudinal guidance maneuver. The at least one selected reason is communicated to the occupant of the motor vehicle. This can ensure that a better understanding and thus trust in autonomous driving is also achieved with regard to the autonomously performed longitudinal guidance maneuvers. This is also conducive to increased driving safety.

In particular in the case of longitudinal guidance maneuvers, it can happen that different longitudinal guidance maneuvers follow one another quickly and alternately. Accordingly, the respective reasons can quickly change. In order to ensure that the occupant or driver of the motor vehicle is not confused, several reasons can be communicated to it at the same time. This applies in particular if the display of the motor vehicle is used to communicate the reason.

The at least one reason for the longitudinal guidance maneuver can be stated as to why a driving speed of the motor vehicle is changed or maintained. For example, it can be stated as a reason that the motor vehicle is performing a free run as an autonomously performed longitudinal guidance maneuver. Here, the motor vehicle runs at the permitted maximum speed and can accelerate accordingly from a lower speed to this maximum speed.

Furthermore, a follow-up drive can be carried out as a longitudinal guidance maneuver, in which the driving speed of the motor vehicle depends on the driving speed of a preceding vehicle. Accordingly, the driving speed is increased, decreased or maintained here, depending on the speed at which the vehicle in front or the vehicle in front is currently driving.

As a reason for the longitudinal guidance maneuver, it can also be stated that there is a delay due to a speed limit. The motor vehicle can therefore be braked in autonomous driving mode in order to respect a currently valid speed limit or an upcoming or future speed limit.

Furthermore, the driving speed of the motor vehicle can be reduced because the autonomously driving motor vehicle approaches a tight curve. Here the deceleration takes place in order not to exceed a comfortable cornering speed. The driving speed of the motor vehicle can be reduced in an analogous manner if the motor vehicle approaches a traffic light or a stop line, if a traffic jam or a construction site is reached or if the motor vehicle traveling on a freeway leaves the freeway at a departure. These circumstances can also be communicated to the occupant as a selected reason, so that the occupant can understand why the driving speed of the motor vehicle changes, in particular is reduced.

The selected reason is preferably communicated to the occupant of the motor vehicle by displaying at least one character representing the selected reason on the display. This has the advantage that the occupant who looks at the maneuver just carried out on the display of the motor vehicle at the same time receives information about the reason for the autonomously performed maneuver.

According to the invention, the selected reason can be understood particularly easily and intuitively by the occupant if the reason is shown on the display by means of several characters, for example by means of a word comprising several characters in the form of letters or by means of a text.

According to an alternative of the invention, it is provided that the majority of the predetermined reasons are shown on the display and the selected reason is highlighted. Then the occupant is quickly familiar with all of the predetermined reasons, so that he can easily understand them. This also makes it easier to understand the autonomous maneuver.

To emphasize the selected reasoning, a contrast can be increased between at least one character representing the selected reasoning and an environment of the character. For example, in a dark environment, the brightness of the character can be increased. This also makes the sign easier to read in the dark or when the daylight becomes weaker or weaker.

If several characters, for example in the form of individual words or in the form of a text, are used to represent the at least one selected reasoning, the legibility is improved by increasing the contrast.

The contrast can in particular be increased step by step, namely whenever a computing operation carried out in the control device has determined the reason for a maneuver currently being carried out. If it then emerges that a large number of consecutive reasons are the same, the contrast of the at least one sign representing this reason increases increasingly. For example, the text will then appear increasingly clearly on the display. This makes the occupant clear in a particularly comprehensible manner the results of the decision processes made by a computing device of the control device.

The contrast between the characters representing at least one selected reason and the surroundings is thus preferably also a measure of the probability that the selected reason accurately reflects the cause of the autonomously performed maneuver. Particularly in the case of longitudinal guidance maneuvers, however, several reasons can be more likely than other reasons to indicate the cause of the maneuver currently being carried out. Correspondingly, the contrast between several characters representing selected reasons, in particular characters or words or texts, and the surroundings of the character can then also be increased. Several comparatively probable reasons can therefore be emphasized. This applies, for example, if a freeway and a subsequent journey alternate with each other while driving on a freeway. Accordingly, these two justifications can then be emphasized more than the other predetermined justifications, but less strongly than if only a single selected justification is to be distinguished from the other predetermined justifications.

The majority of the predetermined reasons can be shown in a list on the display. When changing from a first selected reason to a second selected reason, the contrast between the at least one character representing the first selected reason and the surroundings of the character can be reduced. The contrast between the at least one character representing the second selected reason and the surroundings of the character can be increased in an analogous manner. A gradual transition from the first selected reason to the second selected reason can thus be illustrated to the occupant of the motor vehicle. In this way, a particularly smooth transition between the same can be realized with rapidly changing reasons. This contributes to the fact that the occupant or driver of the motor vehicle can understand the reasons particularly well and thus can better understand the autonomously performed maneuvers.

Finally, it has proven advantageous if a symbol representing the motor vehicle and at least one further symbol are shown on the display. The at least one further symbol illustrates the maneuver just carried out and / or the upcoming maneuver. For example, further symbols can represent brake lights and / or direction indicators of the motor vehicle and can indicate, for example by flashing, that the motor vehicle is braking or that a lane change is imminent. A straight line or a change of lane can also be illustrated by an arrow or the like and in particular the length of such an arrow, for example, indicates the speed. Such symbols shown on the display clearly illustrate the respective maneuver for the occupant, so that he can assign the associated reasoning to the maneuver particularly well.

The motor vehicle according to the invention has at least one sensor for detecting conditions in an environment of the motor vehicle. A control device of the motor vehicle is used to control at least one actuator for autonomous driving as a function of signals from the at least one sensor. The motor vehicle has a display for displaying at least one maneuver just performed by the motor vehicle and / or at least one upcoming maneuver. By means of the control device of the Motor vehicle can be caused that a lane change is carried out as the at least one maneuver. The control device is designed to select a reason from a plurality of predetermined reasons for the lane change. The motor vehicle has means for communicating the selected reason to an occupant of the motor vehicle. Accordingly, the motor vehicle is designed to carry out the method according to the invention.

In particular, the control device has a processor device which is set up to carry out the method according to the invention. For this purpose, the processor device can have at least one microprocessor and / or at least one microcontroller. Furthermore, the processor device can have a program code which is set up to carry out the method according to the invention when executed by the processor device. The program code can be stored in a data memory of the processor device.

The advantages and preferred embodiments described for the method according to the invention also apply to the motor vehicle according to the invention and vice versa.

The features and combinations of features mentioned above in the description and the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the combination indicated in each case, but also in other combinations or on their own, without the scope of Leaving invention. Embodiments are thus also to be regarded and encompassed by the invention, which are not explicitly shown or explained in the figures, but which emerge from the explanations explained and can be generated by separate combinations of features. Designs and combinations of features that do not have all the features of an originally formulated independent claim are therefore also to be regarded as disclosed.

• 1 stark schematisiert ein zum autonomen Fahren ausgebildetes Kraftfahrzeug mit einer Anzeige zur Umfelddarstellung und zur Darstellung einer Begründung eines autonom durchgeführten Manövers
• 2 schematisch eine Umfelddarstellung auf der Anzeige des autonom fahrenden Kraftfahrzeugs, wobei Begründungen für ein von dem autonom fahrenden Kraftfahrzeug durchgeführtes Manöver in einer auf der Anzeige dargestellten Liste aufgeführt und die zutreffende Begründung optisch hervorgehoben ist; und
• 3 schematisch eine alternative Umfelddarstellung auf der Anzeige mit zusätzlicher Begründung des Manövers, wobei ausschließlich die Begründung des gerade aktiven Manövers angezeigt wird.

Further advantages, features and details of the invention emerge from the claims, the following description of preferred embodiments and with reference to the drawings. Show:

• 1 highly schematized a motor vehicle designed for autonomous driving with a display for displaying the surroundings and for showing a reason for an autonomously performed maneuver
• 2nd schematically shows an environment on the display of the autonomously driving motor vehicle, with justifications for a maneuver performed by the autonomously driving motor vehicle listed in a list shown on the display and the appropriate reason is optically highlighted; and
• 3rd schematically an alternative representation of the surroundings on the display with additional reason for the maneuver, whereby only the reason for the currently active maneuver is shown.

1 shows a highly schematic motor vehicle 10th , which is designed for autonomous or automated driving. In particular, it is the motor vehicle 10th a highly automated vehicle in which, during a defined time frame and in a certain context, such as while driving on a freeway, there is no control of the control elements by a driver 12th is required. In other words, the driver gives 12th responsibility for the entire vehicle during the highly automated journey 10th from. The highly automated motor vehicle 10th regulates the control of the motor vehicle during this time 10th independently with the help of sensors 14 to capture an environment 16 or the environment of the motor vehicle 10th . The sensors 14 , of which in 1 only one is shown schematically, transmit corresponding signals to a control device 18th of the motor vehicle 10th . The control device 18th is designed to evaluate the signals using suitable software or to interpret the data. The control device controls in a manner not shown 18th depending on the detected signals at least one drive for wheels 20 , Brakes and steering of the motor vehicle 10th on. The motor vehicle then drives accordingly 10th autonomous or automated.

The control device 18th of the motor vehicle 10th So continuously records its surroundings during the highly automated journey 16 by means of the intended or in the motor vehicle 10th integrated sensors or sensors 14 . Using the sensors 14 the control device 18th the car 10th locate on a street and plan trajectories so that the motor vehicle 10th collision-free and comfortable, especially in accordance with route guidance, in real traffic. The motor vehicle points to the destination 10th preferably a navigation system 22 on.

The control device 18th continuously analyzes the environment 16 to the optimal driving behavior of the motor vehicle 10th to calculate. The control device 18th of the motor vehicle 10th accordingly makes a multitude of decisions at all times. The result of these decision-making processes is the ultimate behavior of the autonomously driving motor vehicle 10th . On a display 24th of the motor vehicle 10th , such as on a screen, the environment 16 shown. That too in this environment 16 located motor vehicle 10th will appear on the display 24th for example as a box-shaped symbol 26 shown. The sensory capabilities of the motor vehicle 10th so can on the display 24th for the driver 12th are visibly displayed.

The ad is present 24th However, it is also used to illustrate the results of the decision-making processes, and so in addition to an all-round view, the driver 12th a reason for the behavior of the motor vehicle 10th communicates. When viewing 24th Accordingly, it is a user interface, which the driver 12th assists in understanding the automated driving function. Accordingly, the driver can 12th Build trust in the automated driving function. This is particularly useful for the highly automated journey in which the driver 12th manual vehicle guidance only takes over again when system limits are reached. For this, it is namely advantageous if the driver 12th the capabilities and limits of the motor vehicle 10th with regard to autonomous driving.

So that the driver 12th can understand how the highly automated motor vehicle 10th or the control device 18th that about the sensors 14 interpreted recorded environmental data, the display 24th used to justify vehicle behavior. On the display 24th So it is not only shown what the motor vehicle 10th sees. The representation on the display 24th is therefore not limited to displaying the traffic environment in the sense of visualizing the data recorded by means of the sensors. Rather it is used to illustrate the data of the sensors 14 also illustrates the processing and interpretation of this data by the system, that is by the control device 18th is made. So can the behavior of the highly automated motor vehicle 10th be understood and predicted in particular. In other words, on the display 24th not just illustrates what the motor vehicle 10th in autonomous driving, but also why the motor vehicle does 10th performs the respective maneuver autonomously. The driver 12th So can not only see which elements in the environment 16 from the motor vehicle 10th be recognized. Rather, the driver can 12th also recognize which stimuli from the environment 16 the car 10th reacted adequately.

On the display 24th that is currently autonomous of the motor vehicle 10th executed maneuvers are displayed. For this purpose, the maneuver is made by means of the control device 18th performed trajectory planning extracted. Accordingly, the display 24 shows what the motor vehicle is 10th just does. The control device 18th considered trajectories give for the motor vehicle 10th in the neighborhood 16 possible travel paths and the speeds that occur. The control device plans in a longitudinal direction, that is to say with regard to longitudinal guidance maneuvers to be carried out autonomously 18th parallel to a variety of possible maneuvers. For example, trajectories for a free drive, a follow-up drive, a future speed limit, for tight bends, for reaching traffic lights or stop lines and the like are calculated. The trajectories thus indicate the possibilities of where in the area 16 the car 10th can drive along in principle. The control device then selects from the large number of possible trajectories 18th that trajectory from which there is a deceleration of the motor vehicle 10th spread over the largest possible period of time. The trajectory is selected which has the least possible jerk in the driving behavior of the motor vehicle 10th occurs. The same applies preferably to accelerations of the motor vehicle 10th . It is therefore preferably ensured that the most defensive maneuver is always carried out.

The possible trajectories are preferably continuously recalculated with a high frequency, for example with a frequency of approximately 25 Hz. This can ensure that there is no abrupt change in driving behavior even when changing from one maneuver to another. Rather, the individual trajectories can be applied to one another in such a way that the driving behavior is at least largely jerk-free. Furthermore, you can quickly switch between the different maneuvers. To visualize the maneuver and in this way the driver 12th to communicate, the reason for the current trajectory is read out in each step or planning step. Here, a reason is selected from a plurality of predetermined reasons for the respective maneuver.

Examples are on the display 24th in 2nd different predetermined reasons for different longitudinal guidance maneuvers and lateral guidance maneuvers in a list 28 shown or displayed. For example, the reasons for different longitudinal guidance maneuvers include different words 30th , 32 , 34 or a text comprising two words as an example 36 . The word 30th “Freifahrt” means that during this maneuver the Motor vehicle 10th drives at the permitted maximum speed. The word 32 “Follow-up” means that the driving speed of the motor vehicle 10th by a vehicle in front 38 is limited, which is on the display 24th is illustrated by another symbol. The word 34 "Speed limit" means that the motor vehicle 10th makes a delay to meet a current or future speed limit. Furthermore, the text shown as an example has 36 "Narrow curve" means that the motor vehicle 10th decelerates so as not to exceed a comfortable cornering speed.

From these reasons for longitudinal guidance maneuvers of the motor vehicle, the justification valid for the current trajectory is read out in each subsequent step and on the display 24th a little more highlighted than in the previous step of the high frequency steps or planning steps. The reasons in the form of words 30th , 32 , 34 or the text 36 in contrast, the other longitudinal guidance maneuvers are somewhat darkened. Correspondingly, the brightness of characters such as letters 40 to form the words or words 30th , 32 , 34 or the text 36 towards an environment 42 on the display 24th elevated. If the situation of the corresponding longitudinal guiding maneuver is unambiguous, this emphasis is strengthened in such a way that the reasoning which reproduces the maneuver quickly becomes a word (shown here in white as an example) 30th , 32 , 34 or as text (shown here in white as an example) 36 on the display 24th becomes recognizable. At the same time, the reasons for the other maneuvers are somewhat darkened.

Runs the motor vehicle 10th on the other hand, an ambiguous maneuver, for example, two reasons in the form of words 30th , 32 , 34 or the text 36 on the display 24th compared to the other entries in the list 28 more strongly, for example gray. Such a situation can occur, for example, if the vehicle in front 38 is followed, so the maneuver is a follow-up drive, but at the same time the driving speed of the motor vehicle 10th at least at times that of a free ride. The driving speed of the motor vehicle is then corresponding 10th almost identical for free travel and subsequent travel. So in such a case, however, not always between the word 30th "Free ride" and the word 32 "Follow-up drive" as a reason for what is currently the motor vehicle 10th performed maneuvers, both reasons are compared to the remaining entries in the list 28 somewhat emphasized, but less strongly than when it comes to justifying a clear maneuver.

In the list 28 further entries are given as reasons for lateral guidance maneuvers in which the motor vehicle 10th performs a lane change during autonomous driving. The reasons and reasons for changing lanes are in the list 28 further words in the present case 44 , 46 , 48 specified. For example, the word means 44 "Overtaking" that the lane change is carried out in order to gain a speed advantage. The word 46 "Right-hand drive" expresses that there is currently no motivation to keep the lane and therefore there is a change to the right lane. The word 48 "Navigation", on the other hand, indicates that a lane change to a lane is necessary to achieve the desired one in the navigation system 22 of the motor vehicle 10th achieve specified goal.

When such a lane change is made in the control device 18th implemented a hard decision for the underlying cause of the lane change. The respective reason or reason for the lane change in the list is correspondingly 28 the maneuvers are clearly highlighted. In the present in 2nd the example shown serves the word 44 "Overtaking" the reason for the lane change. It is supposed to be the vehicle in front 38 be overtaken.

During the lane change (in the present case for the purpose of overtaking), the reason for the longitudinal maneuver, which sometimes takes place simultaneously, is preferably not highlighted. Because, for example, the motor vehicle accelerates when overtaking 10th preferably to the speed limit valid for this street. However, the reason for this longitudinal maneuver is preferably only displayed again after the lane change has taken place. The reason for the transverse maneuver in the form of the lane change is therefore initially displayed. Then the reason for the subsequent longitudinal guidance maneuver appears on the display 24th highlighted.

In 2nd you can also see that on the display 24th the environment 16 can be displayed as it is from the sensors or sensors 14 of the highly automated vehicle or motor vehicle 10th was recorded. A street is accordingly 50 with the respectively available or existing number of lanes or lanes 52 , 54 and by means of the sensors 14 recognized lane markings 56 pictured. Is also the Position of the highly automated motor vehicle 10th in the street 50 or the respective lane 52 , 54 with the symbol 26 reproduced. In the present case, it is the symbol 26 around a blue box.

The street 50 can also be color-coded, with the optimal lane 52 , 54 For example, can be colored green and a non-optimal lane, for example red. Which of the lanes 52 , 54 it is the preferred or optimal lane, for example, due to the use of the navigation system 22 given predetermined route to a destination. Also other vehicles, of which the vehicle is exemplary here 38 shown are shown dynamically in real time on the display 24th displayed, the other vehicle is present 38 as a gray box on the in 2nd right lane 54 shown.

The ad 24th mediates to the driver 12th further information about the maneuver that the motor vehicle 10th is currently executing, for example by displaying symbols for brake lights 58 as well as for turn signals 60 of the motor vehicle 10th . In addition, an arrow 62 the direction of travel of the motor vehicle 10th represent.

On the display 24th is also the list in a column 28 provided with the predetermined reasons for executable maneuvers. For longitudinal guidance maneuvers of the motor vehicle 10th on the display 24th to represent, such as braking or accelerating, for example, the symbols light up, the brake lights 58 of the motor vehicle 10th represent when the motor vehicle 10th autonomously brakes. Correspondingly, for example, by changing the length of the arrow 62 displayed whether the motor vehicle 10th just accelerating or braking. At the same time as the autonomous one, i.e. through the control device 18th effected these longitudinal guidance maneuvers 30th , 32 , 34 (or the text 36 ), which indicate the associated reason for the respective maneuver, on the display 24th in the list 28 optically highlighted. Examples are as the justifications in 2nd the words 30th , 32 , 34 "Free ride", "Follow-up trip", "Speed limit" and the text 36 "Narrow curve" shown.

At the same time, on the display 24th the reasons for autonomously performed lateral guidance maneuvers are shown in 2nd the words are exemplary 44 , 46 , 48 "Overtaking", "Right-hand drive" and "Navigation". The words justifying these maneuvers 44 , 46 , 48 are colored white here when the control device 18th performing the appropriate maneuvers. The remaining possible reasons for inactive maneuvers are greyed out, in other words with less contrast to the surroundings 4th shown. This has the advantage that the change between the reasons for different maneuvers can be displayed with a particularly smooth transition. This applies, for example, if the traffic situation and therefore the reason for the maneuver just undertaken changes quickly.

Depending on the vehicle 10th built-in sensors, depending on the type of sensor design 14 and the technical possibilities, other reasons can be shown on the display 24th being represented. In this way, specific environmental factors can be included, such as the presence of a traffic jam or a construction site, the achievement of a departure from a motorway and the like. The list can be adjusted accordingly 28 by (words not shown here such as "traffic jam", "construction site" or "departure") can be expanded.

At the in 2nd shown variant of the display 24th the inactive reasons are hardly noticeable to the environment 42 highlighted, that is, in the case of the environment shown here in black as an example 42 shown in gray. In contrast, only active reasons for longitudinal guidance maneuvers or a clear reason for changing lanes are emphasized more strongly.

At one in 3rd shown variant of the display 24th In contrast, the possible reasons for the currently active maneuver are not in the form of a list 28 shown. Rather, here on the display 24th just a justification word 64 , for example the word 64 "Overtaking" shown. This is particularly easy to implement when the evaluation of the possible trajectories by the control device 18th shows that there is a clear justification for what is currently active, i.e. in the autonomous driving mode of the motor vehicle 10th maneuvers that have just been carried out. If the recorded data permit such a clear representation, it can be provided that in a corresponding field 66 or area of the display 24th only the reason for the currently active maneuver is displayed. This allows the ad 24th comparatively compact.

Reference list

10th

Motor vehicle

12th

driver

14

Sensors

16

Surroundings

18th

Control device

20

bikes

22

navigation system

24th

display

26

symbol

28

list

30th

word

32

word

34

word

36

text

38

vehicle

40

Letters

42

Surroundings

44

word

46

word

48

word

50

Street

52

Lane

54

Lane

56

Lane marking

58

Brake light

60

indicator

62

arrow

64

word

66

field

Claims (10)

Method for operating a motor vehicle (10), in which the motor vehicle (10) drives autonomously, and in which on a display (24) of the motor vehicle (10) at least one maneuver just carried out by the motor vehicle (10) and / or at least one upcoming Maneuver is shown, wherein a control device (18) of the motor vehicle (10) causes a lane change to be carried out as the at least one maneuver, the control device (18) for a plurality of predetermined reasons (44, 46, 48) for the lane change selects a reason (44), an occupant (12) of the motor vehicle (10) communicating the selected reason (44), characterized in that the selected reason (44) is composed of a plurality of characters in the form of letters or a text is shown on the display (24). Method for operating a motor vehicle (10), in which the motor vehicle (10) drives autonomously, and in which on a display (24) of the motor vehicle (10) at least one maneuver just carried out by the motor vehicle (10) and / or at least one upcoming Maneuver is shown, wherein a control device (18) of the motor vehicle (10) causes a lane change to be carried out as the at least one maneuver, the control device (18) for a plurality of predetermined reasons (44, 46, 48) for the lane change selects a reason (44), an occupant (12) of the motor vehicle (10) communicating the selected reason (44), characterized in that the display (24) shows the majority of the predetermined reasons (44, 46, 48) and the selected reason (44) is highlighted. Procedure according to Claim 1 or 2nd , characterized in that the reason given for the lane change is that this means - overtaking (44) another vehicle (38) or - following a command to use a specific lane (46), or - arranging for driving a destination (48) determined by means of a navigation system of the motor vehicle is reached. Procedure according to Claim 1 , 2nd or 3rd , characterized in that the control device (18) of the motor vehicle (10) ensures that at least one longitudinal guidance maneuver is carried out autonomously after the lane change and / or before the lane change, the control device (18) being based on a plurality of predetermined reasons (30 , 32, 34, 36) selects at least one reason (32) for the longitudinal guidance maneuver and the at least one selected reason (32) is communicated to the occupant (12) of the motor vehicle (10). Procedure according to Claim 4 , characterized in that the at least one reason (30, 32, 34, 36) for the longitudinal guidance maneuver is given as to why a driving speed of the motor vehicle (10) is changed or maintained. Procedure according to one of the Claims 2 to 5 , characterized in that to emphasize the selected reasoning (32, 44), a contrast between at least one character representing the selected reasoning (32, 44), in particular characters (40), and an environment (42) of the character, in particular characters (40 ) is increased. Procedure according to Claim 6 , characterized in that on the display (24) the plurality of predetermined reasons (30, 32, 34, 36, 44, 46, 48) is displayed in a list (28), wherein when changing from a first selected reason (30) to a second selected reason (32), the contrast between the at least one character representing the first selected reason (30), in particular characters ( 40), and the environment (42) of the character, in particular the character (40), is reduced and the contrast between the at least one character representing the second selected reason (32), in particular characters (40), and the environment (42) of the Character, in particular character (40), is increased. Procedure according to one of the Claims 1 to 7 , characterized in that on the display (24) a symbol (26) representing the motor vehicle (10) and at least one further symbol (58, 60, 62) is displayed, by means of which the maneuver just carried out and / or the forthcoming maneuver is illustrated becomes. Motor vehicle with at least one sensor (14) for detecting conditions in an environment (16) of the motor vehicle (10), with a control device (18) for controlling at least one actuator for autonomous driving as a function of signals from the at least one sensor (14), and with a display (24) for displaying at least one maneuver just performed by the motor vehicle (10) and / or at least one upcoming maneuver, wherein the at least one maneuver can be effected by means of the control device (18) of the motor vehicle (10) Lane change is made, the control device (18) being designed to select a reason (44) from a plurality of predetermined reasons (44, 46, 48) for the lane change, the motor vehicle (10) having means (24) to an occupant (12) of the motor vehicle (10) to communicate the selected reason (24), characterized in that on the display the au The selected reason (44) can be represented by several characters in the form of a word comprising letters or by means of a text on the display (24). Motor vehicle with at least one sensor (14) for detecting conditions in an environment (16) of the motor vehicle (10), with a control device (18) for controlling at least one actuator for autonomous driving as a function of signals from the at least one sensor (14), and with a display (24) for displaying at least one maneuver just performed by the motor vehicle (10) and / or at least one upcoming maneuver, wherein the at least one maneuver can be effected by means of the control device (18) of the motor vehicle (10) Lane change is made, the control device (18) being designed to select a reason (44) from a plurality of predetermined reasons (44, 46, 48) for the lane change, the motor vehicle (10) having means (24) to to communicate the selected reason (24) to an occupant (12) of the motor vehicle (10), characterized in that on the display the measurement The number of predetermined reasons (44, 46, 48) can be displayed and the selected reason (44) can be highlighted.

Images