To more surely acquire whether or not a prescribed passenger rides in a vehicle.

This ride confirmation system 10 is provided with a first antenna 18 and a first transmitting/receiving part 20 capable of collecting an identification signal transmitted from an identification tag (for example, an RF-ID tag) 14 which the passenger has by radio from a communication area including approximately the entire of a riding area, a control part 22 to acquire a riding state of the passenger in the vehicle based on the collected identification signal and registration data to identify the passenger to be stored in a storage part 24 and an output part 50 to output the riding state.