When receiving the transportation request from the user (step S200), the management center extracts the unoccupied vehicle according to the transportation request and selects it as a transportation vehicle (step S201). After selecting the transportation vehicle, the management center transmits to the transportation vehicle the transportation information including the instruction for start-up of air-conditioning (step S202). When receiving the drop-off completion information from the transportation vehicle (step S205), the management center selects the standby area (step S206) and transmits to the transportation vehicle standby information including the instruction for shut-down of air-conditioning (step S207).