METHOD FOR UPDATING A DIGITAL ROAD MAP

摘要

The invention relates to a method for updating a digital road map in which road segments having segment lengths are stored. The method includes equipping at least two vehicles with at least one respective onboard unit generating position readings; if a first set of position readings of a first onboard unit can be associated with a road segment, determining a first path length based on the position readings of the first set; if a second set of position readings of a second onboard unit can be associated with the same road segment, determining a second path length based on the position readings of the second set; calculating an average path length based on at least the first and second path lengths; and if the average path length deviates from the stored segment length, storing the average path length as an updated stored segment length of this road segment in the digital road map.