Method for operating an emergency braking system, driver assistance system and motor vehicle

Abstract

The invention relates to a method for operating an emergency braking system (2) of a motor vehicle (1), which increases the comfort of the vehicle user. For this purpose, position data about a geographically limited area (3) are provided, in particular, by a user. The emergency braking system (2) is automatically deactivated by a driver assistance system 10 of the motor vehicle (1) when the motor vehicle (1) is located within the geographically limited area (3).

Description

The invention relates to a method for operating an emergency braking system of a motor vehicle, and to an associated driver assistance system and a motor vehicle.Within known driver assistance systems of motor vehicles, emergency brake systems exist, among other things, which are designed to prevent a collision with objects and persons, in particular during a slow drive, for example up to 10 km / h, or during parking processes. Known emergency braking systems have, for example, functions such as a maneuvering braking function or AEB-PR (automatic emergency braking pedestrian rear). For this purpose, objects and persons in a vehicle environment of the motor vehicle can be detected by means of a surroundings sensor system of the motor vehicle. The motor vehicle can then be braked automatically, i.e. without a driver of the motor vehicle being engaged, by triggering an automatic emergency braking process, by means of the emergency braking system if the emergency braking system predicts a collision with the object or a person in the vehicle environment, in particular in a predicted driving path. For example, a collision with a pedestrian who runs behind the motor vehicle during reverse parking from a parking space can thus be prevented.A problem of such emergency brake systems may be, in particular, that their performance may be limited due to limitations of current sensor systems or in the interpretation of a scene. For example, it may be that the emergency braking system incorrectly initiates an automatic emergency braking process if, based on sensor data of the environment sensor system, an object or a person in the predicted driving path of the motor vehicle is predicted unauthorized as a relevant collision object in the driving path. This erroneous recognition can occur, for example, as collision objects in the vehicle surroundings as a result of signal reflections or incorrect image recognition or image interpretation of objects, in particular objects in the road surface such as gulli covers or rain gutters, or else as a result of shadows forming in static and dynamic situations. An incorrectly triggered emergency braking process by the emergency braking system, in particular in reproducible scenarios such as, for example, parking in a user's own lane of the motor vehicle, can be very annoying to the user.Although the emergency braking system can be deactivated actively by means of a user interface of the motor vehicle prior to starting driving by a corresponding interaction of the user in the prior art, a deactivated state of the emergency braking system is usually not stored beyond a firing change. If necessary, the deactivated state must be confirmed by the user after the start of the trip. This means an increased outlay for deactivation.EP 3 351 441 A1 discloses a device for increased safety during slow vehicle movements. In this case, an automatic brake unit can be temporarily deactivated as a function of a request from the driver.The object of the invention is to specify an improved concept for the operation of an emergency braking system, for a driver assistance system and for a motor vehicle, which increases the comfort of the vehicle user.The object is achieved by the subject matters of the independent claims. Advantageous refinements of the invention are described by the dependent patent claims, the following description and the figures.A first aspect of the invention relates to a method for operating an emergency braking system of a motor vehicle. The method has in particular the following steps.providing position data over a geographically limited area;automatically deactivating the emergency braking system when the motor vehicle is within the geographically limited area.An important advantage of this concept is that the emergency braking system is deactivated automatically, i.e. without a user of the motor vehicle, under the specified, necessary condition. The user therefore does not have to deactivate the emergency braking system actively, for example by an input into a user interface of the motor vehicle. This can be advantageous in particular when the user in the geographically limited area always wishes to have deactivated the emergency braking system. This desire can arise, for example, from the fact that in this area the emergency braking system always incorrectly initiates an emergency braking process, so that the user is always disturbed by the emergency braking by the emergency braking system. Thus, the user may wish to deactivate the emergency braking system each time he approaches the area with the motor vehicle, so that it does not incorrectly trigger it. As a result of the deactivation of the emergency braking system now taking place automatically when the motor vehicle is within the geographically limited area, the comfort of the user is significantly increased.A wrong, automatic emergency braking process can occur, for example, because, based on sensor data of a surroundings sensor system of the motor vehicle, an object detection unit of the motor vehicle or of the emergency braking system incorrectly detects an object or a person in a vehicle surroundings of the motor vehicle, in particular in a predicted driving path of the motor vehicle, and a collision is thus predicted, whereupon the motor vehicle brakes by means of the emergency braking system. For example, misinterpreted signal reflections, for example ultrasonic echoes, from a rain drain grid or from a gulli cover in a roadway surface of an entrance can lead to erroneous object recognition. It may likewise be that the rain drain grid or the gulli cover, for example based on image data, are interpreted as collision objects in an unauthorized manner. Since these objects are static, this disturbance can therefore occur repeatedly. Misinterpretations may also be possible in dynamic situations, such as the misinterpretation of shadows as a collision object.The object recognition unit can in particular use an object recognition algorithm. Within the scope of the present disclosure, an object recognition algorithm can be understood as a computer algorithm which is capable of identifying and locating one or more objects within a provided input data set, in particular provided by the environment sensor system, for example in the form of an input image, in particular of predicting them in the driving path, for example by defining corresponding bounding boxes or regions of interest, ROI (region of interest), and in particular assigning a corresponding object class to each of the bounding boxes, wherein the object classes can be selected from a predefined set of object classes. In this case, the assignment of an object class to a bounding box can be understood in such a way that a corresponding confidence value or a probability of the object identified within the bounding box belonging to the corresponding object class is provided. For example, for a given bounding box, the algorithm may provide such a confidence value or probability for each of the object classes. The assignment of the object class may include, for example, selecting or providing the object class with the greatest confidence value or probability. Alternatively, the algorithm can also specify only the bounding boxes without assigning a corresponding object class.The object recognition unit or the object recognition algorithm can be in particular such that it can be trained and thus improved on the basis of training data from static and / or dynamic situations.A surroundings sensor system may be understood, for example, as a sensor system which is capable of generating sensor data or sensor signals which map, represent or reflect a surroundings surroundings sensor system. The environment sensor system may in particular have a plurality of sensor units, in particular ultrasonic sensors, lidar sensors, radar sensors and / or cameras.The electronic emergency braking system can be understood in particular as a system which provides emergency braking functions for emergency braking of the motor vehicle. Known functions are, for example, maneuvering brake functions, which can be based in particular on ultrasound and are used during slow driving or during parking or parking, in order to avoid a collision with objects in the driving tube in static and dynamic situations. Another function is known, for example, as an AEB-PR (automatic emergency breaking pedestrian rear), which automatically initiates an emergency braking process depending on detected objects, and in particular persons.The emergency braking process that the emergency braking system triggers is to be triggered automatically in an emergency, in particular when a collision is predicted, and the driver of the motor vehicle does not react by active braking. In this respect, the emergency braking system is absolutely necessary to distinguish from a braking assistance system which merely assists the driver during braking.The position data can be provided in particular digitally on a storage unit, for example of the motor vehicle, and can be called up by a vehicle assistance system of the motor vehicle. In particular, the position data can be stored permanently, so that they can also be called up permanently. For example, the position data can have geographical coordinates, in particular GPS coordinates, which characterize the geographically limited area. The position data can be read in, in particular, via an interface of the driver assistance system or of the emergency braking system.The geographically limited area can be, for example, a limited area on the surface of the earth, which can be characterized by the position data. For example, the geographically limited area may be a property, a part of a property, a road segment or the area of a boiling. The geographical area can also be referred to as an area within a so-called "geofence", which can be drawn around the area.The emergency braking system can be deactivated automatically, in particular by means of the electronic driving assistance system of the motor vehicle. Automatically, it can be understood here that this takes place without an active action of the user, but merely depending on the necessary condition that the motor vehicle is located within the geographically limited area, or in other words, when the motor vehicle drives into the geographically limited area.Whether the motor vehicle is located within the geographically limited area can be determined, for example, by comparing the stored position data of the area with the detected position data of the motor vehicle. For example, the position data of the motor vehicle can be acquired by means of an electronic position system of the motor vehicle, for example by means of GPS signals or triangulation.It is provided in particular that the emergency braking system is activated before the deactivation. By deactivating, it may be provided that the functions of the emergency braking system are no longer provided. However, it may be possible to re-activate the emergency braking system, in particular by means of the driver assistance system.In particular, it can be provided that the emergency braking system remains deactivated when the motor vehicle is parked in the geographically limited area and is restarted at a later point in time.The method can be, in particular, an inventive variant of so-called "geo-furnaceking", in which an action can be triggered automatically when the boundary of the geographically limited area is exceeded.The brake system can be, in particular, a module of the driver assistance system. Here and in the following, a module can be understood as a hardware module or as a software module. In particular, a module can also consist of hardware and a software part implemented on the hardware.A software module may be understood as a part of the software code that is functionally connected and combined into one unit. A software module may include or implement multiple processing steps and / or data structures. A method step for providing a software module can be understood to comprise providing a corresponding software code in computer readable form on a computer readable storage medium.According to at least one exemplary embodiment, it is provided that the position data are provided by a user of the motor vehicle by means of an interface of the motor vehicle.One advantage is that the user himself can specify the geographically limited area by means of a corresponding input. The user can thus decide in advance himself in which area the emergency braking system should be deactivated automatically.In particular, an input of the position data about the area is only required once. The input position data are preferably stored on the memory unit and thus permanently provided, so that they can be read in by the driver assistance system. The comfort is thus further increased in that the user does not have to re-input the position data at each start of the motor vehicle.The interface can in particular be a user interface (engl. The human machine interface, HMI) of the motor vehicle may be used. The HMI can be designed, for example, as a touch screen, into which the user can input the position data in a suitable manner. Alternatively, the user may input the position data by voice or gesture.However, the interface can also be designed as an interface for an electronic terminal external to the motor vehicle. The electronic terminal can be, for example, a smartphone of the user, which can be connected to the interface by signal technology, for example via cable, Bluetooth, IR, WiFi, mobile radio, Car2X or the like. The position data can thus be input by the user via the electronic terminal, which are then forwarded to the motor vehicle. For example, the interface can also be connected to a central server device, for example a cloud, so that the position data can also be called up by the cloud. It can be provided that the position data have also been provided by other users in the cloud.According to at least one exemplary embodiment, it is provided that a digital map is provided to the user, wherein the position data correspond to an area marked by the user on the digital map. In such a way, the user can advantageously input the position data in a particularly user-friendly and intuitive manner.The digital map can be displayed in particular on the touch screen or on the smartphone or tablet of the user. For example, the user can mark a point on the map and define an associated radius around this point in order to define the area. It may be possible to draw a rectangle on the map or mark several points forming a closed polygon path within which the marked surface is located. In addition, further input methods are possible.According to at least one exemplary embodiment, it is provided that a notification is output to the user by means of a user interface of the motor vehicle when the emergency braking system is automatically deactivated. This advantageously results in the user being alerted that the emergency braking system is no longer engaging. The attention of the user to road traffic and thus the safety in road traffic can thus be increased, since the user no longer relies on the emergency braking system.The indication can be, for example, an acoustic signal in the form of speech or a sound, which is output via a loudspeaker of the motor vehicle. Alternatively or additionally, the indication can be displayed visually on a screen of the motor vehicle, for example as a symbol or writing. Further information possibilities are also conceivable, for example, the vibration of the steering wheel, or an information on a coupled smartphone of the user.According to at least one exemplary embodiment, it is provided that the emergency braking system is automatically reactivated upon leaving the geographically limited area. Comfort can be increased in particular by the fact that the user does not have to activate the emergency braking system again on leaving the area.By the reactive or renewed activation of the emergency braking system by means of the driver assistance system, the emergency braking functions can in particular be activated again automatically.According to at least one exemplary embodiment, it is provided that the method is carried out only in a parking mode or in a slow-driving mode of the motor vehicle. It is preferably provided that the emergency braking system is activated only in a parking mode or in a slow-driving mode of the motor vehicle. This has the consequence that the emergency braking system can also be automatically deactivated by means of the method only in these modes.For example, the user may activate the park mode and / or the slow-drive mode through an associated input. Alternatively, the parking mode and / or the slow-driving mode can be activated automatically by an electronic system of the motor vehicle. For example, the parking mode is automatically activated when the user sets a reverse gear or the like. The slow-driving mode can be understood in particular as a mode of the motor vehicle in which the motor vehicle drives more slowly than a predefinable speed threshold and / or in which the motor vehicle carries out a predefinable maneuver to be carried out at low speed. The speed threshold may be, for example, 5, 10, 15 or 20 kilometers per hour. The maneuver can be, for example, a starting, driving in, driving out or parking. The slow-drive mode can also be activated automatically, for example, when the first gear or the second gear or the reverse of the motor vehicle is engaged.According to at least one exemplary embodiment, it is provided that a learning system is automatically activated when the motor vehicle is within the geographically limited area or when the emergency braking system is automatically deactivated. In other words, the learning system is activated instead of the emergency braking system. The learning system can be activated and deactivated again, in particular, by the driver assistance system. In addition, the learning system can also be activated if information from other users about the position of the motor vehicle is available from the cloud.Preferably, the learning system can be used to carry out the step of outputting an indication to a user of the motor vehicle if the activated emergency braking system had generated a braking signal for braking the motor vehicle. Since the activated emergency braking system would have generated the braking signal as a function of a predicted collision with an object or a person in the predicted driving path of the motor vehicle, the learning system now generates a signal for outputting the indication as a function of a predicted collision with an object or a person in the predicted driving path of the motor vehicle. Accordingly, it may be provided that the environment sensor system of the motor vehicle is also active within the geographically limited area and is not deactivated, since this is likewise required for the learning system.The indication can be made in particular depending on the signal of the learning system through the user interface, for example on the operating screen and / or additionally through an acoustic signal, which can simultaneously be a warning signal.Preferably, the learning system can be used to take the further step of storing data about a detected surrounding situation of the motor vehicle at the time of the indication and via the feedback as a function of a feedback of the user to the indication. In particular, data about the feedback to the information and data about the surrounding situation are stored jointly and associated with one another on the storage unit and / or on a cloud.For example, the hint may include a question to the user whether or not the hint was justified based on the perception of the user's vehicle environment. Accordingly, the feedback may be a yes or a no. The feedback can be in particular No if an unauthorized collision with an object or a person has been predicted, for example because an object such as a gullicap or a rain gutter has been incorrectly recognized as a collision object or the scene of the static or dynamic situation has been incorrectly interpreted.The data of the surrounding situation can in particular have position data and orientation data of the motor vehicle, and sensor data of the environment sensor system at the time of the notification, and / or the object predicted as a collision object in the vehicle environment.Preferably, the learning system can be used to carry out the further step of training the emergency braking system mechanically based on the stored data. In particular, the object recognition system is machine-trained based on the stored data. For this purpose, the object detection system can have a machine-trained function, by means of which at least collision objects can be detected in the driving path or predicted in the driving path in static or dynamic situations. This function can be further trained by the stored data, so that the object recognition unit learns for this purpose. In particular, the object detection unit may learn when the data includes, via the feedback, that the hint was not justified. For example, the object recognition unit can learn to no longer recognize a specific, recognized object, for example a gulli cover or a rain gutter, as a collision object, so that an emergency braking process is no longer carried out by the emergency braking system in the future.In particular, even a small number of data may be sufficient for training if the position data are also taken into account. In particular, the object recognition unit can quickly learn that a recognized object is not a collision object at a specific position. As a result, the object recognition unit can be trained quickly and effectively within the geographically limited area.The advantage when using the learning system is in particular that the emergency braking system no longer has to be deactivated within the geographically limited area, since the emergency braking system has been trained at least to the extent that static objects in this area are no longer recognized as collision objects and thus the emergency braking system no longer incorrectly initiates an emergency braking process.According to at least one exemplary embodiment, it is provided that the stored data about the detected environmental situation and about the feedback are sent to a server device external to the motor vehicle. This results in at least the advantage that these data can be used not only as training data relating to the motor vehicle, but also for systems of a fleet of motor vehicles. In particular, the plurality of data received by the server device can be used to train the object recognition unit already in the delivery state of an associated motor vehicle, such that, for example, gulli lids or rain gutters are in principle no longer recognized as collision objects or situations are incorrectly interpreted.The motor vehicle can be connected wirelessly to the server device, for example, by means of mobile radio or Car2X. The server device can be, for example, a cloud of a motor vehicle manufacturer.For use cases or application situations which can arise in the method and which are not explicitly described here, provision can be made for an error message and / or a request for inputting a user feedback to be output and / or for a default setting and / or a predetermined initial state to be set according to the method.The invention also comprises the combinations of the features of the described exemplary embodiments.A further aspect of the invention relates to a driver assistance system which has at least one arithmetic unit. The driver assistance system is designed to carry out the method according to the invention.An advanced driver assistance system (ADAS) may be understood to mean a system that assists the driver in partially automated or partially autonomous driving. In particular, the electronic vehicle guidance system may implement a partially automated or semi-autonomous driving mode according to levels 1 through 4 according to the SAE J3016 classification. Here and in the following, "SAE J3016" refers to the corresponding standard in the April 2021 version.A computing unit can be understood in particular as a data processing device which contains a processing circuit. The computing unit can therefore process data in particular for carrying out computing operations. This also includes operations to perform indexed accesses to a data structure, for example a look-up table (LUT).The computing unit can in particular contain one or more computers, one or more microcontrollers and / or one or more integrated circuits, for example one or more application-specific integrated circuits, ASICs (application-specific integrated circuit), one or more field programmable gate arrays, FPGAs, and / or one or more single-chip systems, SoCs (system on a chip). The computing unit may also contain one or more processors, for example one or more microprocessors, one or more central processing units, CPUs (central processing units), one or more graphics processing units, GPUs (graphics processing units) and / or one or more signal processors, in particular one or more digital signal processors, DSPs. The computing unit may also include a physical or virtual group of computers or other of the aforementioned units.In various exemplary embodiments, the computing unit contains one or more hardware and / or software interfaces and / or one or more memory units.A memory unit can be used as volatile data memory, for example as dynamic random access memory, DRAM (dynamic random access memory) or static random access memory, SRAM (static random access memory), or as nonvolatile data memory, for example as read-only memory, ROM (read-only memory), as programmable read-only memory, PROM (programmable read-only memory), as erasable programmable read-only memory, EPROM (erasable programmable read-only memory), as electrically erasable programmable read-only memory, EEPROM (electrically erasable programmable read-only memory), as flash memory or flash EEPROM, as ferroelectric random access memory, FRAM (ferroelectric random access memory), as magnetoresistive random access memory, MRAM (magnetoresistive random access memory) or as phase-change random access memory, PCRAM (phase-change random access memory).A further aspect of the invention relates to a motor vehicle which has a vehicle assistance system according to the invention.Exemplary embodiments of the invention are described in more detail below. The following shows: FIG. 1 shows a schematic illustration of an exemplary embodiment of a motor vehicle according to the invention; FIG. 2 shows a flow diagram of an exemplary embodiment of a method according to the invention. FIG. 3 shows an embodiment of a digital map with a marked area.The exemplary embodiments explained below are preferred exemplary embodiments of the invention. In the exemplary embodiments, the described components each represent individual features of the invention that are to be considered independently of one another and that develop the invention in each case also independently of one another and are therefore also to be considered as part of the invention individually or in a combination other than the combination shown. Furthermore, the described exemplary embodiments can also be supplemented by further features of the invention that have already been described.In the figures, elements having the same function are each provided with the same reference numerals.FIG. 1 shows a schematic representation of an exemplary embodiment of a motor vehicle 1 according to the invention. The motor vehicle 1 can have a driver assistance system 10, a surroundings sensor system 12, a storage unit 13 and an interface 4 or a user interface 7, which can be connected to one another by signal technology.Environment sensor system 12 may be understood, for example, as a sensor system that is capable of generating sensor data or sensor signals that map, represent, or reflect a vehicle environment of motor vehicle 1. The environment sensor system may in particular have a plurality of sensor units, in particular ultrasonic sensors, lidar sensors, radar sensors and / or cameras.The electronic driver assistance system 10 can have at least one computing unit 9, and in particular an emergency braking system 2, a learning system 8 and an object recognition unit 11.The electronic driver assistance device 10 can be designed, inter alia, in particular to carry out the method according to the invention, which is explained in more detail on the basis of an exemplary embodiment in the description relating to FIG. 2.Based on the sensor data of environment sensor system 12, object recognition unit 12 may recognize objects or persons in the vehicle environment of motor vehicle 1, in particular objects in a predicted driving path in a parking mode or slow-driving mode of motor vehicle 1.The electronic emergency braking system 2 can be, in particular, a module of the driver assistance system 10. The emergency braking system 2 can be understood in particular as a system which provides emergency braking functions for emergency braking of the motor vehicle 1. Known functions are, for example, maneuvering brake functions which are used during slow driving or during parking or parking in order to avoid a collision with an object or a person. Another function is known, for example, as an AEB-PR (automatic emergency breaking pedestrian rear), which automatically triggers an emergency braking process depending on objects detected by the object detection unit 12, and in particular persons.The electronic learning system 8 can be, in particular, a module of the driver assistance system 10. It can be provided that the learning system 8 can be activated automatically by the driver assistance system 10. Further details are explained in more detail in this regard in the description of FIG. 2.FIG. 2 shows a flow diagram of an exemplary embodiment of a method according to the invention for operating the emergency braking system 2 of a motor vehicle 1, which method can be carried out in particular by the driver assistance system 10. The method is carried out in particular in a parking mode or in a slow-driving mode of the motor vehicle 1.In a first step S 1, the position data about the geographically limited area 3 can be provided. The position data can be provided in particular by means of an interface 4 of the motor vehicle 1, in particular the user interface 7, by a user or driver of the motor vehicle 1. For this purpose, a digital map 5 can be provided to the user by means of the user interface 7, for example a touch screen. In this digital map 5, the user can now mark an area 6 which corresponds to the position data, for example by touching or swiping on the touch screen. This position data can then be stored on the storage unit 13 and be permanently available, so that the user only has to input the position data once.In a second step S 2, the emergency braking system 2 can be automatically deactivated by the driver assistance system 10 if the motor vehicle 1 is located within the geographically delimited area 3. For this purpose, it can be provided that an indication is output to the user by means of the user interface 7 of the motor vehicle 1 that the emergency braking system 2 is or is automatically deactivated.In parallel with step S 2, in a parallel, third step S 3, the learning system 8 can be automatically activated when the motor vehicle 1 is located within the geographically limited area 3, wherein a notice is output to a user of the motor vehicle 1 by means of the learning system 8 if the activated emergency braking system 2 had generated a braking signal for braking the motor vehicle 1, and data about a detected surrounding situation of the motor vehicle 1 at the time of the notice and about the feedback are stored as a function of a feedback of the user to the notice, and the emergency braking system 2 or the object recognition unit 11 is trained mechanically based on these data.When the motor vehicle 1 leaves the geographically limited area 3, it can be provided in a fourth step S 4 or in a fifth step S 5 by means of the driver assistance system 10 that emergency braking system 2 is reactivated automatically again or the learning system 8 is deactivated automatically again.FIG. 3 shows an embodiment of a digital map 5 with a marked area 6, which can represent the geographically limited area 3. For example, the base of a single-family building, in particular its entrance, can be marked as area 6, within which the emergency braking system 2 is deactivated or the learning system 11 is to be activated.List of reference characters1 Motor vehicle 2 Emergency braking system 3 Geographically delimited area 4 Interface 5 Digital map 6 Marked surface 7 User interface 8 Learning system 9 Computing unit 10 Driver assistance system 11 Object recognition unit 12 Environment sensor system 13 Memory unitReferences included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedEP 3 351 441 A1

[0005]

Claims

Method for operating an emergency braking system (2) of a motor vehicle (1), comprising the steps of: - providing position data about a geographically delimited area (3); - automatically deactivating the emergency braking system (2) if the motor vehicle (1) is located within the geographically delimited area (3).Method according to Claim 1, wherein the position data are provided by a user of the motor vehicle (1) by means of an interface (4) of the motor vehicle (1).Method according to claim 2, wherein a digital map (5) is provided to the user, wherein the position data corresponds to an area (6) marked by the user on the digital map (5).Method according to one of the preceding claims, wherein an indication is output to the user by means of a user interface (7) of the motor vehicle (1) if the emergency braking system (2) is automatically deactivated.Method according to one of the preceding claims, wherein the emergency braking system (2) is automatically reactivated on leaving the geographically delimited area (3).Method according to one of the preceding claims, wherein the method is carried out in a parking mode or in a slow-driving mode of the motor vehicle (1).Method according to one of the preceding claims, wherein a learning system (8) is automatically activated when the motor vehicle (1) is located within the geographically limited area (3), wherein - an indication is output to a user of the motor vehicle (1) by means of the learning system (8) if the activated emergency braking system (2) had generated a braking signal for braking the motor vehicle (1), - data about a detected surrounding situation of the motor vehicle (1) at the time of the indication and about the feedback are stored as a function of a feedback of the user to the indication, and - the emergency braking system (2) is trained mechanically on the basis of the stored data.Method according to Claim 7, wherein the stored data are sent to a server device external to the motor vehicle.Driver assistance system (10), having at least one arithmetic unit (9), wherein the driver assistance system (10) is designed to carry out a method according to one of the preceding claims.Motor vehicle (1) comprising a vehicle assistance system (10) according to Claim 9.

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