Required time specifying system, required time specifying method, required time specifying program

摘要

PROBLEM TO BE SOLVED: To provide a duration specification system, a duration specification method and a duration specification program that can prevent duration of a road link from varying due to a current position of a vehicle acquired in the vehicle and can precisely specify duration of a whole route when the vehicle stops within an intersection.SOLUTION: An on-vehicle device 1 comprises: a current position acquisition unit 5 that acquires a current position of a vehicle; a travel time specification unit 7a that specifies entry road travel time being the time required for the vehicle to exit from an entry link after entering the entry link; an intersection stop time specification unit 7b that specifies intersection stop time being the time required for the vehicle to pass through an intersection exit position at least after entering an exit link; and a duration specification unit 7c that specifies duration of the entry link as the time including the entry road travel time and the intersection stop time.