INFORMATION PROCESSING METHOD AND INFORMATION PROCESSING DEVICE

An information processing method and an information processing device acquire a path information on a path included in a road network set on a map data, acquire a reroute request indicating an instruction to regenerate a route when generating the route that a vehicle is scheduled to travel in correspondence with the road network based on the path information stored in the database, acquire a path type indicating whether a target path on which the vehicle is traveling at a timing when the reroute request is acquired is a first path or a second path bifurcating from the first path, included in the road network, and delete the path information stored in the database based on the path type.