| 摘要 |
PROBLEM TO BE SOLVED: To display a route to be easily recognized. SOLUTION: Position measuring means 4, 6 measure a present position of a vehicle. A reading means 7 reads out a map data from a map information storing means 8. A route retrieval control means 5 retrieves the route from the present position to a destination to determine the first road connected to the route and the second road not connected to the route. A display means 12 displays the route and the first road and does not display the second road. |
