Method for driving assistance, in accordance with a signal system
The invention relates to a driving assistance method for a vehicle, wherein the movement of the vehicle in the direction of travel can be influenced in accordance with a traffic-controlling signal system positioned on the road in front of the vehicle and having cyclically recurring signal states, and wherein, inside the vehicle, first data relating to the position of a stop line associated with the signal system, and second data relating to the start times and end times of individual signal states of the signal system are determined via a first data processing system (electronic horizon) and provided in the form of data packets (messages) (A, B) for electronic control devices by means of a data connection inside the vehicle, and wherein individual data packets contain at least the following data: an earliest possible and/or latest possible time for the exchange of a signal phase, as well as a most probable time of the exchange of a signal phase. The corresponding data can be provided in a more efficient manner in the vehicle, in a predetermined bit length according to the ADASIS v2-protocol and optionally by means of a CAN-bus-transport protocol, in such a way that the electronic control devices can base the planning of driving assistance measures on same.
1. A driving assistance method in a vehicle, in which the movement of the vehicle in the direction of travel can be influenced on the basis of a traffic-controlling signal system which is in front of the vehicle on a road and has recurring signal states dynamically adapted to traffic, the method comprising:
transmitting, from the traffic-controlling signal system, first data relating to a position of a stop line assigned to the signal system and second data specifying a plurality of start times and a plurality of end times of individual signal states of the signal system, wherein the second data includes an earliest possible time for a change to a signal state of the signal system and a latest possible time for a change from the signal state of the signal system, and the second data includes a most likely time of the change to the signal state of the signal system and a most likely time of the change from the signal state of the signal system;
receiving, inside the vehicle by a first data processing system, and providing, by the first data processing system, the first data and the second data to electronic control devices in the form of data packets by means of a data connection inside the vehicle.
2. The method as claimed in claim 1 , wherein at least one first data packet and one second data packet are provided by the first data processing system, the first data packet containing an item of information stating both that a second data packet connected to the first data packet is available and that the most likely time of the change to the signal state of the signal system and the most likely time of the change from the signal state of the signal system are dynamically adapted to a volume of traffic.
3. The method as claimed in claim 1 , wherein the data packets are coded according to the ADASIS v2 standard.
4. The method as claimed in claim 1 , wherein the data are transmitted inside the vehicle via a CAN bus.