An object of the present invention is to prevent a start-up locked state from being released by a third party other than a rightful driver. After a movable body 31 has been set in a state of halted operations (a start-up locked state) by a start-up lock setting unit 830, a rightful driver must contact a manager on a terminal device 11 side when this driver forgets a password or hands over to another driver. Having received contact, the manager transmits a start-up lock release command from the terminal 11 side to the movable body 31 via communication units 1 (see FIG. 1), whereby the state of halted operations (start-up locked state) in the movable body 31 is released.