Lean map matching OBU with an adaptive digital map

摘要

The object of the present invention is to provide a method for calculating a road charge for a vehicle, whereby said vehicle is provided with an OBU, wherein the OBU is provided with a GNSS receiver. The OBU is adapted to communicate with a central system and to receive position-information from the GNSS receiver. The OBU is provided with road charge object data regarding primary road charge objects and the central system is provided with road charge object data regarding at least secondary road charge objects. The OBU can detect passages of primary road charge objects and when the vehicle is travelling outside of the primary road charge object zone the OBU transmits information regarding the position of the vehicle to the central system such that the central system can detect passages of secondary road charge objects. The inventive method also comprises detection of appropriate updates of the road charge object data and methods for updating the road charge object data. The invention also relates to a system running such method.