Method for locating road objects

A device for locating road objects on the basis of a plurality of routes transmitted by at least one vehicle being driven on a road network, a route transmitted by a vehicle comprising:

• a plurality of successive vehicle locations acquired during a driving session,
• at least one particular road object detected during the driving session by a sensor of the vehicle, said object being associated with a location of the vehicle at the time of its detection,
• the device being characterized in that it comprises a processor, and a memory in which are stored computer program instructions suitable for configuring the processor to implement the following steps:
• initializing a list of calibration road objects, whereby a particular road object is associated with a location, with at least one road object the actual location of which is known,
• selecting routes comprising at least one road object referenced in the list of calibration road objects, and
• for each selected route,
• computing at least one readjustment parameter representative of a discrepancy between a location associated with an object in the route, and a location associated with said object in the calibration list,
• applying the computed readjustment parameter to the objects comprised in the route to obtain a calibrated route, and
• updating the list of calibration objects with the locations of road objects comprised in the calibrated route,
• the steps of selecting, computing, applying and updating being repeated provided that at least one computed readjustment parameter is above a particular threshold.