<;P>;PROBLEM TO BE SOLVED: To provide a route guide device (car navigation device) for a vehicle capable of guiding the vehicle along a route properly to a low-speed-running riding mobile vehicle (power wheelchair) which is an arrival target. <;P>;SOLUTION: The car navigation device 10 loaded on the vehicle 12 for guiding along a route from a present position of the vehicle positioned on map data to a set destination has a constitution including: a receiver 24 for receiving at each prescribed time, position information of the low-speed-running riding mobile vehicle transmitted from the low-speed-running riding mobile vehicle (power wheelchair 26); and a destination setting means (microcomputer 14) for setting at each prescribed time as a destination, a position of the low-speed-running riding mobile vehicle determined based on the received position information. <;P>;COPYRIGHT: (C)2010,JPO&INPIT