| 摘要 |
PROBLEM TO BE SOLVED: To enable a driver to change a route search condition as he likes, and to change to a guide route having a different route search condition as the driver likes, without performing any operation to a navigation device. SOLUTION: A control operation part 101 searches for a route from the present position of a vehicle to a destination relative to each of a plurality of different route search conditions having the order of priority attached thereto, determines a route searched for based on a route search condition having the highest order of priority as a guide route among a plurality of searched-for routes, determines other routes as alternative routes, and displays the guide route and the alternative routes together on an image display part 105. When the vehicle is detected traveling along the alternative route, the control operation part 101 changes the order of priority attached to the alternative route the vehicle traveling thereon to the highest one, searches again for a route from the present position of the vehicle at that time to the destination, and displays the guide route newly searched for and the alternative routes together on the image display part 105. COPYRIGHT: (C)2008,JPO&INPIT |
