Method and device for estimating the number of lanes and/or the lane width on a roadway

摘要

A system for estimating the lane width and/or the number of lanes on a roadway includes environmental sensors mounted on a vehicle to monitor respective detection areas behind and to the sides of the vehicle. The sensors detect a roadway edge and the system determines a distance to the roadway edge. The system further determines a value or accesses a predefined nominal value of a lane width, and then estimates the number of lanes by evaluating the roadway edge distance with reference to the lane width value.

主权项

1. A method for a driver assistance system for a subject vehicle that drives on a roadway and that is equipped with a sensor system arranged to monitor a detection area along the roadway, wherein the method comprises the steps:
a) in a processing circuit of the driver assistance system, obtaining a lane width value of a lane width of a lane of the roadway; b) in the processing circuit, evaluating sensor data from the sensor system and thereby attempting to recognize, from the sensor data, at least one roadway edge of the roadway; and if the step b) recognizes the at least one roadway edge, then further performing the following steps in the processing circuit: c) determining an edge distance of the at least one roadway edge; d) comparing the edge distance with the lane width value to produce a comparison result; and e) from the comparison result, determining an estimated number of lanes on the roadway.