WO2020001941A1

WO2020001941A1 - Device and method for adapting a driving property of an ego-vehicle for driving around a curve

Info

Publication number: WO2020001941A1
Application number: PCT/EP2019/064565
Authority: WO
Inventors: Werner Riegel
Original assignee: Zf Friedrichshafen Ag
Priority date: 2018-06-28
Filing date: 2019-06-05
Publication date: 2020-01-02
Also published as: DE102018210592A1

Abstract

The invention relates to a device (16) for adapting a driving property of an ego-vehicle (10) for driving around a curve (14), comprising: an input interface (18) for receiving vehicle data of a preceding vehicle (12); a vehicle interface (20) for receiving vehicle data of the ego-vehicle; an adaptation unit (22) for determining at least one adaptation value for adapting a driving property of the ego-vehicle on the basis of the received vehicle data of the preceding vehicle and the vehicle data of the ego-vehicle; and an output unit (24) for outputting the at least one determined adaptation value to a control unit (30) of the ego-vehicle. The invention further relates to a method for adapting a driving property of an ego-vehicle (10) for driving around a curve (14), a driver assistance system (28) and a vehicle (10).

Description

Device and method for adapting a driving characteristic of one's own

Vehicle driving around a curve

The present invention relates to a device for adapting a driving characteristic of one's own vehicle when driving around a curve and a corresponding method, and to a driver assistance system for regulating a speed of one's own vehicle and a vehicle.

Modern vehicles (cars, vans, trucks, motorcycles, but also transport vehicles in an industrial environment, etc.) include a variety of driver assistance systems that provide the driver with information and control individual functions of the vehicle in a partially or fully automated manner. Due to the progressive development in the field of autonomous and semi-autonomous vehicles, the influence and scope of driver assistance systems is constantly increasing. The development of ever more precise sensors makes it possible to record the surroundings and traffic and to control individual functions of the vehicle more or less without driver intervention. Driver assistance systems can help to increase safety in traffic and improve driving comfort, especially when driving long distances.

A relevant functional area of driver assistance systems is the automatic regulation of a vehicle's speed. So-called adaptive driving assistants (AFA) support the driver when accelerating and braking, maintaining speed and distance, guiding the lane (for example in speed ranges from 0 to 250 km / h) and in traffic jams. A cruise control enables a preset speed to be maintained without the driver having to actively accelerate or brake. Adaptive cruise control (ACC) is based on the fact that automated acceleration and braking keep a preset distance from a vehicle in front constant. The speed of the vehicle in front is adapted and the vehicle in front is tracked, so to speak. A problem here can be that the vehicle in front is also followed when it is driving around a curve at a comparatively high speed. However, it depends on the vehicle whether safe and comfortable cornering is possible in given road conditions (e.g. wetness, slippery, ice, slippery flooring or radius of the curve). Different types of vehicles cannot necessarily make the same cornering without compromising comfort and / or safety. This can be problematic if the vehicle in front is a sportier vehicle that allows safe and comfortable driving around a curve at a higher speed than your own vehicle. In addition, a driver of a vehicle may be less attentive due to the distance control used. As a result, driving comfort may be impaired or the safety of the vehicle and the occupants may be endangered.

In this context, DE 10 2012 213 933 A1 relates to a method for controlling a speed control system of a motor vehicle, which controls the speed to a predetermined target speed. When the motor vehicle is cornering, the speed control system regulates the speed to a predetermined, reduced desired circle speed in the context of a curve mode. Alternatively or additionally, the speed control system can undertake reduced acceleration or completely prevent acceleration of the motor vehicle.

A disadvantage of such solutions is that it is necessary to determine in advance which lateral acceleration of the vehicle leads to which adaptation of the driving speed and / or the acceleration. External factors, such as the weather, road conditions, etc., which can lead to other environmental conditions, are not taken into account.

In this context, the object of the present invention is to improve the driving comfort as well as the active and passive safety of a vehicle when driving around a curve. In particular, when using a vehicle rerassistance system enables a cornering suitably adapted to the situation.

To achieve this object, the present invention relates in a first aspect to a device for adapting a driving characteristic of one's own vehicle when driving around a curve, with:

an input interface for receiving vehicle data of a preceding vehicle;

a vehicle interface for receiving vehicle data of the own vehicle;

an adaptation unit for determining at least one adaptation value for adapting a driving characteristic of the own vehicle based on the received vehicle data of the preceding vehicle and the vehicle data of the own vehicle; and

an output unit for outputting the at least one determined adaptation value to a control unit of one's own vehicle.

In a further aspect, the present invention relates to a driver assistance system for regulating a speed of an own vehicle with:

a device as described above; and

a control unit for controlling a drive and braking system of the own vehicle in order to regulate a distance to a vehicle in front when driving around a curve based on the determined adaptation value for the speed.

In a further aspect, the invention relates to a vehicle with

a device or a driver assistance system as described above; a drive and brake system for accelerating and decelerating the vehicle;

a vehicle information system for providing vehicle data of the own vehicle; and

a sensor for determining vehicle data of the vehicle in front, the sensor preferably as a camera, radar, lidar and / or ultra sound sensor is formed; and / or a vehicle communication unit for receiving vehicle data from a vehicle communication unit of the preceding vehicle, preferably via a wireless communication link.

Further aspects of the invention relate to a corresponding method and a computer program product with program code for carrying out the steps of the method when the program code is executed on a computer, and to a storage medium on which a computer program is stored which, when it is executed on a computer, performing the method described herein.

Preferred embodiments of the invention are described in the dependent claims. It goes without saying that the device, the method, the driver assistance system, the vehicle and the computer program product can be designed in accordance with the configurations described for the device and the driver assistance system in the dependent claims.

The device according to the invention is used to adapt a driving characteristic of one's own vehicle when driving around a curve. It is provided that on the one hand vehicle data of a preceding vehicle and on the other hand vehicle data of the own vehicle are taken into account in order to adapt a driving characteristic of the own vehicle. When driving through the curve, data about a vehicle in front are included.

Depending on the type of vehicle, a curve can be driven through in different ways, in particular at different speeds, so that sufficient driving comfort and sufficient safety of the vehicle and the occupants are ensured. The device according to the invention enables vehicle data of the preceding vehicle to be taken into account in order to adapt a driving characteristic of the own vehicle before and / or while driving through the curve. The vehicle in front is analyzed in order to adapt properties of the own vehicle when driving around a curve. It will avoided that the vehicle in front was followed without further correction even when driving around a curve. Compared to previous approaches, active and passive safety is increased and driving comfort is improved.

In particular, it is advantageous if a device according to the invention is integrated in a driver assistance system for regulating the speed of one's own vehicle. This can be done, for example, by integrating hardware and / or by adapting software accordingly.

A driving characteristic of a vehicle is understood here to mean in particular a characteristic of the vehicle that can be adapted by changing a parameter during the operation of the vehicle. A curve here means in particular a change of direction in the course of a road or a path, by means of which a centrifugal force is brought about above a predefinable threshold. An acceleration sensor for measuring the centrifugal force in a vehicle can be used, for example, to determine whether a curve is being traveled or not. An adaptation value can in particular be an absolute or relative change value, by means of which a change in a driving characteristic can be quantified.

In a preferred embodiment, the adaptation unit is designed to determine an adaptation value for a speed of one's own vehicle. The speed of your own vehicle is therefore adjusted based on what type of vehicle the vehicle in front is. In particular, the speed is reduced if necessary. If it is determined before and / or when driving through the curve that the vehicle data of the preceding vehicle mean that the preceding vehicle is a vehicle of a different type, it is necessary to adapt the speed of the own vehicle. If the vehicle in front is sportier, the speed of your own vehicle is reduced. Adjusting the speed makes cornering more comfortable and safer. In an advantageous embodiment, the vehicle data of the preceding vehicle comprise a vehicle type of the preceding vehicle and the vehicle data of the own vehicle comprise a vehicle type of the own vehicle; and the adaptation unit is designed to determine an adaptation value for reducing the speed of the own vehicle if the vehicle type of the preceding vehicle is sportier than the vehicle type of the own vehicle. A vehicle type of the vehicle in front is determined and compared with the own vehicle type. A vehicle type is understood to mean a type of vehicle that can be made, for example, in the form of an assignment to a category of differently designed vehicles. If it is determined that the vehicle in front is sportier than one's own vehicle (assigned to a sportier category), the speed of one's own vehicle must be reduced to ensure comfortable and safe cornering. The speed of your own vehicle is adjusted accordingly to the difference to the vehicle type of the vehicle in front. A sportier vehicle type is understood here to mean, in particular, a combination of vehicle properties with regard to the motorization, the weight, the chassis and the aerodynamics.

In a further advantageous embodiment, the input interface is designed to receive vehicle data of the preceding vehicle from a sensor of the driver's own vehicle, in particular from a camera, a radar, lidar and / or ultrasound sensor; and / or to receive from a vehicle communication unit of the own vehicle, which is designed for communication with a vehicle communication unit of the preceding vehicle, preferably via a wireless communication connection. On the one hand, the vehicle data of the preceding vehicle can be determined within the own vehicle by means of a sensor. On the other hand, it is also possible for the vehicle in front to transmit data via a vehicle communication unit. By using our own sensors, it can be ensured that there is no dependency on external data sources. By using data that is transmitted by the vehicle in front, current, precise and extensive vehicle data can be received. The vehicle interface is advantageously designed to receive environmental data of the vehicle; and the adaptation unit is designed to determine the adaptation value based on the environmental data. In addition to the vehicle data of the vehicle in front, environmental data can also be taken into account when determining the adaptation value. In this context, environmental data is understood in particular to be data that describe a current environment of the vehicle. For example, it can be determined by means of a rain sensor whether the ground is (with high probability) wet or a statement can be made with regard to possible slippery roads by means of a temperature sensor. The additional consideration of such environmental data when determining the adaptation value ensures that the driving properties of one's own vehicle are adapted as optimally as possible to the vehicle in front and the surroundings in order to enable a high level of driving comfort with safe and rapid cornering.

Furthermore, the device advantageously comprises a communication unit for transmitting the vehicle data of the preceding vehicle to a vehicle database and for receiving further information on the preceding vehicle from the vehicle database, the adaptation unit being designed to determine the adaptation value based on the further information; and the communication unit is preferably designed as a mobile communication unit for establishing a connection to a server via the Internet. It is possible that a database is queried based on the vehicle data of the preceding vehicle in order to obtain further information about the preceding vehicle. Such additional information allows the vehicle characteristic of the own vehicle to be adapted in a further optimized manner. In particular, information that cannot be extracted from the received vehicle data can bring about an additional improvement in the precision when determining the adaptation value.

Advantageously, the vehicle data of the own vehicle and the preceding vehicle each comprise at least one vehicle type, a vehicle weight and / or a suspension setting. A vehicle type is understood to mean a type of vehicle. For example, an assignment to categories can take place or a brand name and / or a model name can be determined by an image evaluation of an image of the vehicle in front. A vehicle weight can, for example, be estimated based on a size of the vehicle or can also be taken from a database. A chassis setting can be determined based on an observation of the driving behavior, if necessary with the additional aid of a reference value.

In one configuration, the adaptation unit is designed to determine an adaptation value for a setting of a chassis component of one's own vehicle, in particular a damper setting. The adjustment of a damper setting makes it possible for the driving behavior of the vehicle to be adapted for driving through the curve. This leads to improved driving comfort and increases safety when cornering.

In an advantageous embodiment of the driver assistance system, the control unit is designed to increase the distance to the vehicle in front if the adaptation value for the speed of the driver's vehicle corresponds to a reduction in the speed. An increase in the distance to the vehicle in front corresponds to a reduction in the relative speed of the own vehicle in comparison to the vehicle in front. The curve is therefore traversed more slowly than the vehicle in front. In this way, different driving behavior can be taken into account.

Further advantageously, the driver assistance system comprises a user interface for the input of a maximum speed by a user, the control unit being designed to regulate the distance to the vehicle in front when a speed of the own vehicle is lower than the maximum speed. Distance control systems (ACC) in particular are usually based on the fact that a maximum speed is entered by a user which should not be exceeded. According to the invention, in addition to This maximum value takes into account the determined adaptation value for the speed when determining an adequate cornering speed.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the combination indicated in each case, but also in other combinations or on their own without departing from the scope of the present invention.

The invention is described and explained in more detail below on the basis of a few selected exemplary embodiments in conjunction with the accompanying drawings. Show it:

Figure 1 is a schematic representation of your own vehicle and a vehicle in front when driving around a curve.

2 shows a schematic representation of a device according to the invention;

3 shows a schematic illustration of a driver assistance system according to the invention;

4 shows a schematic illustration of a vehicle according to the invention;

5 shows a schematic illustration of a device according to the invention in communication with a vehicle database; and

Fig. 6 is a schematic representation of a method according to the invention.

1 shows a traffic situation in which an own vehicle 10 follows a preceding vehicle 12 when driving around a curve 14. By using a driver assistance system, in particular an adaptive cruise control (ACC), the acceleration and deceleration in your own vehicle are automatically set so that a distance between the own vehicle 10 and the preceding vehicle 12 is kept constant within a predefinable tolerance.

The type of vehicle determines whether safe and comfortable cornering at a speed that corresponds to the speed of the preceding vehicle 12 is possible under given road and environmental conditions. Depending on the wheelbase, weight, chassis components etc., cornering at a certain speed may be more or less possible. For example, a sports car can travel through a predefined curve at a certain speed without slipping out of the curve, whereas a delivery truck as the following own vehicle 10 cannot drive through the same curve at the same speed without slipping. Depending on the vehicle in front, cornering can mean different driving comfort or different driving safety for your own vehicle.

The solution according to the invention provides that the own vehicle 10 additionally takes into account vehicle data of the vehicle 12 driving ahead when using the driver assistance system when driving through a curve. Information about the vehicle in front is included in order to adapt a vehicle characteristic of the own vehicle if necessary. Here, on the one hand, vehicle data of the vehicle 12 driving ahead can be recognized by means of sensors on the driver's own vehicle 10, and a vehicle type can be determined based on this, for example. On the other hand, however, it is also possible for the vehicle 12 driving ahead to recognize or to be informed that it serves as a towing vehicle for a vehicle behind it and then to transmit corresponding vehicle data to its own vehicle 10. Regardless of the source of the vehicle data, the speed and / or another vehicle property of the own vehicle 10 is adjusted based on the vehicle data of the preceding vehicle and the own vehicle data.

A device 16 according to the invention is shown schematically in FIG. 2. The device comprises an input interface 18, a vehicle interface 20, an adaptation unit 22 and an output unit 24. Optionally, as defined by the Indicated in dashed lines, the device also includes a communication unit 26. The device 16 preferably corresponds to an expansion for a cruise control, an ACC system or an AFA system.

The input interface 18 serves to receive vehicle data of a preceding vehicle. In particular, data on weight, size, speed, vehicle type, chassis setting etc. can be received as vehicle data. The vehicle data can be received as raw data (sensor data) or as preprocessed data.

For this purpose, the input interface 18 can be connected to a sensor of one's own vehicle and receive its sensor data and process it if necessary. In particular, it is possible to use a camera from which camera data are received that show the vehicle in front. An image of the vehicle in front is therefore evaluated. For example, a camera image can be evaluated and a brand name or type designation can be recognized. It is also possible for data from a radar, lidar and / or ultrasound sensor to be received via the input interface. The input interface can, for example, be connected to a corresponding bus system within the vehicle and connected to the corresponding sensors of the vehicle. It is also possible for the input interface to receive data from several sensors and, if necessary, to pre-process them.

As an alternative or in addition to receiving data from one or more sensors of one's own vehicle, it is possible for the input interface 18 to be designed to receive the vehicle data of the preceding vehicle from the preceding vehicle. The vehicle in front therefore makes its vehicle data available itself. For this purpose, the input interface 18 can be connected to a vehicle-to-vehicle communication system, for example. The vehicle in front can transmit its data wirelessly using short-range communication, for example. It is also possible for data to flow via a mobile communication network, that is to say via the Internet. The vehicle interface 20 serves to receive vehicle data of the own vehicle. For example, data on weight, size, speed, vehicle type, chassis setting etc. can also be received as vehicle data. The type of vehicle data of the own vehicle can correspond to the vehicle data of the vehicle in front. However, it is also possible for the vehicle data of the preceding vehicle and of the driver's vehicle to describe different properties of the vehicles. The vehicle interface 20 can also be connected to a vehicle bus system for data reception. However, it is also possible for the vehicle interface 20 to communicate with an internal or external database in order to obtain the corresponding vehicle data of the own vehicle.

The adaptation unit 22 is designed to evaluate the vehicle data of the own vehicle and the vehicle in front and to determine an adaptation value for a vehicle characteristic of the own vehicle based thereon. For example, calculations or lookup operations can be carried out for this purpose. In particular, it is possible for the vehicle data of the driver's own vehicle and the vehicle in front to be used to determine a vehicle type based on a previously known classification and then to output a likewise predefined adaptation value based on this classification.

A vehicle type is thus determined on the basis of the data received via the input interface.

In order to carry out the actual control and adaptation of the driving characteristics of one's own vehicle based on the determined adaptation value, an output unit 24 is provided which forwards the determined adaptation value to a control unit. The adaptation unit can also be connected to a vehicle bus. For example, the control unit can communicate directly with an engine and / or brake control device. The communication advantageously takes place with a corresponding unit of a driver assistance system.

The adjustment value can be used to adjust different vehicle properties. In particular, it is advantageous if an adjustment the speed of your own vehicle. For this purpose, the adaptation value can contain an absolute or relative indication of a speed reduction. For example, the speed can be reduced by an adaptation value in the form of an absolute value (in km / h) which is passed on to a brake control device.

If, for example, the vehicle type of the vehicle in front belongs to a category that means that it is a vehicle that is classified as sportier than one's own vehicle, an adjustment value for the speed can be determined, which brings about a speed reduction. The curve is therefore driven through more slowly than the vehicle in front, because the safety of the vehicle occupants can only be guaranteed and / or the desired driving comfort is achieved by slower driving.

FIG. 3 shows a driver assistance system 28 according to the invention, which comprises a device 16 according to the invention and a control unit 30 and optionally a user interface 32.

The driver assistance system 28 corresponds in particular to a cruise control. Based on a determined adaptation value for the speed, a drive and braking system of a vehicle is controlled via the control unit 30, so that the vehicle can be accelerated and / or decelerated. In particular, the vehicle can be slowed in relation to the vehicle in front if the acceleration is reduced or even a deceleration is actively caused by a braking intervention.

In current driver assistance systems, a maximum speed is usually specified via the user interface 32, the control unit 30 then being designed to regulate the distance to the vehicle in front only when the maximum speed has not been exceeded. The user interface 32 can be designed, for example, as a touchscreen display in the interior of one's own vehicle. A vehicle 34 according to the invention is shown schematically in FIG. 4. The vehicle includes a driver assistance system 28, the input interface 18 of which is connected to a sensor 36. In the exemplary embodiment shown, the sensor is attached in the front area of the vehicle below the radiator grille and corresponds to a camera or an image sensor of a camera. The vehicle in front can be detected via the camera and an assessment of a vehicle type can be made, for example, based on the size.

In the illustrated embodiment, the vehicle 34 further comprises a vehicle communication unit 38. The vehicle communication unit 38 allows communication with a corresponding unit of the preceding vehicle. In particular, direct wireless communication or indirect communication can take place via a mobile radio network and via an Internet server. The vehicle data received from the preceding vehicle are then transmitted to the driver assistance system 28 via the input interface 18.

The vehicle 34 further comprises a drive and braking system 40, which can be integrated, for example, in a central vehicle control unit or in an engine control unit and by means of which the vehicle can be accelerated or decelerated.

In addition, the vehicle includes a vehicle information system 42, to which the vehicle interface 20 of the driver assistance system 28 is connected in order to receive the vehicle data. The vehicle information system 42 can, for example, correspond to a central control unit of the vehicle and the communication can take place via a vehicle bus system.

A device 16 according to the invention with a communication unit 44 is shown schematically in FIG. 5. The communication unit 44 can communicate with a vehicle database 46 in order to obtain information about the preceding vehicle from this. Communication can take place, for example, wirelessly via mobile communication via the Internet, with the vehicle data tenbank 46 is designed as an Internet database. However, it is also conceivable that the vehicle database is arranged inside the vehicle.

By communicating with a database, the accuracy in determining the adjustment value can be increased. For example, a vehicle type can be recognized on the basis of camera data and a vehicle weight of this vehicle type can be queried based on this from the vehicle database 46. By taking such additional information about the vehicle in front into account, the determination of the adaptation value can be further improved.

A method according to the invention is shown schematically in FIG. 6. The method comprises the steps of receiving S10 vehicle data from a preceding vehicle, receiving S12 vehicle data of the driver's vehicle, determining S14 at least one adaptation value and outputting S16 the adaptation value to a control unit. The method according to the invention can in particular be implemented as software which extends the functionality of an existing driver assistance system and which uses the sensors and control technology already present in the vehicle. So sensors that are already in vehicles can often be used, so that a hardware change is not necessary.

The invention has been described and explained comprehensively with reference to the drawings and the description. The description and explanation are to be understood as examples and not restrictive. The invention is not limited to the disclosed embodiments. Other embodiments or variations will occur to those skilled in the art using the present invention, as well as upon a detailed analysis of the drawings, the disclosure, and the following claims.

In the claims, the words "comprise" and "with" do not exclude the presence of further elements or steps. The undefined article "a" or "an" does not exclude the existence of a plurality. A single element or a single unit can perform the functions of several of the units mentioned in the claims. An element, a unit, a device and a system can be partially or completely implemented in hardware and / or in software. The mere mention of some measures in several different dependent claims is not to be understood to mean that a combination of these measures cannot also be used advantageously. A computer program can be stored / distributed on a non-volatile data carrier, for example on an optical memory or on a semiconductor drive (SSD). A computer program can be distributed together with hardware and / or as part of hardware, for example by means of the Internet or by means of wired or wireless communication systems. Reference signs in the claims are not to be understood as restrictive.

Bezuaszeichen own vehicle

vehicle in front

Curve

contraption

Input interface

Vehicle interface

matching unit

output unit

communication unit

Driver assistance system

control unit

User interface

vehicle

sensor

Vehicle communication system

Drive and brake system

Vehicle Information System

communication unit

Vehicle database

Claims

claims

1. Device (16) for adapting a driving characteristic of one's own vehicle (10) when driving around a curve (14), with:

an input interface (18) for receiving vehicle data of a preceding vehicle (12);

a vehicle interface (20) for receiving vehicle data of the own vehicle;

an adaptation unit (22) for determining at least one adaptation value for adapting a driving characteristic of the own vehicle based on the received vehicle data of the preceding vehicle and the vehicle data of the own vehicle; and

an output unit (24) for outputting the at least one determined adaptation value to a control unit (30) of one's own vehicle.

2. Device (16) according to one of the preceding claims, wherein the adaptation unit (22) is designed to determine an adaptation value for a speed of the own vehicle (10).

3. Device (16) according to any one of the preceding claims, wherein

the vehicle data of the preceding vehicle (12) comprise a vehicle type of the preceding vehicle and the vehicle data of the own vehicle (10) comprise a vehicle type of the own vehicle; and

the adaptation unit (22) is designed to determine an adaptation value to reduce the speed of the own vehicle if the vehicle type of the preceding vehicle is sportier than the vehicle type of the own vehicle.

4. Device (16) according to one of the preceding claims, wherein the input interface (18) is designed to receive vehicle data of the preceding vehicle (12) from

to receive a sensor (36) of the own vehicle (10), in particular from a camera, a radar, lidar and / or ultrasonic sensor; and or a vehicle communication unit (38) of the own vehicle, which is designed for communication with a vehicle communication unit of the preceding vehicle, preferably via a wireless communication link.

5. Device (16) according to one of the preceding claims, wherein

the vehicle interface (20) is designed to receive environmental data of the vehicle; and

the adaptation unit (22) is designed to determine the adaptation value based on the environmental data.

6. Device (16) according to one of the preceding claims, with

a communication unit (44) for transmitting the vehicle data of the preceding vehicle (12) to a vehicle database (46) and for receiving further information about the preceding vehicle from the vehicle database, wherein

the adaptation unit (22) is designed to determine the adaptation value based on the further information; and

the communication unit is preferably designed as a mobile communication unit for establishing a connection with a server via the Internet.

7. Device (16) according to one of the preceding claims, wherein the vehicle data of the own vehicle (10) and the preceding vehicle (12) each comprise at least one vehicle type, a vehicle weight and / or a chassis setting.

8. The device (16) according to one of the preceding claims, wherein the adaptation unit (22) is designed to determine an adaptation value for a setting of a chassis component of one's own vehicle (10), in particular a damper setting.

9. Driver assistance system for regulating the speed of one's own vehicle (10) with a device (16) according to one of claims 2 to 8; and

a control unit (30) for controlling a drive and braking system (40) of the own vehicle in order to regulate a distance to a vehicle in front (12) when driving around a curve (14) based on the determined adaptation value for the speed.

10. Driver assistance system according to claim 9, wherein the control unit (30) is designed to increase the distance to the vehicle in front (12) when the adaptation value for the speed of the own vehicle (10) corresponds to a reduction in speed.

11. Driver assistance system according to one of claims 9 and 10, with

a user interface (32) for entering a maximum speed by a user, wherein

the control unit (30) is designed to regulate the distance to the vehicle in front (12) when a speed of the own vehicle (10) is lower than the maximum speed.

12. Vehicle (10) with:

a device (16) according to one of claims 1 to 8 or with a driver assistance system (28) according to one of claims 9 and 11;

a drive and brake system (40) for accelerating and decelerating the vehicle;

a vehicle information system (42) for providing vehicle data of the own vehicle (10); and

a sensor (36) for determining vehicle data of the preceding vehicle (12), the sensor preferably being designed as a camera, radar, lidar and / or ultrasonic sensor; and / or a vehicle communication unit (38) for receiving vehicle data from a vehicle communication unit of the preceding vehicle, preferably via a wireless communication connection.

13. A method for adapting a driving characteristic of one's own vehicle (10) when driving around a curve (14), comprising the steps:

Receiving (S10) vehicle data of a preceding vehicle (12);

Receiving (S12) vehicle data of the own vehicle;

Determining (S14) at least one adaptation value for adapting a driving characteristic of the own vehicle based on the received vehicle data of the preceding vehicle and the vehicle data of the own vehicle; and

Outputting (S16) the at least one determined adaptation value to a control unit of one's own vehicle.

14. A computer program product with program code for performing the steps of the method according to claim 13 when the program code is executed on a computer.