Patent ID: 9132837
Filing Date: 2015-09-15
Classification: B60W

Abstract:
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.