| 摘要 |
PROBLEM TO BE SOLVED: To evaluate the propriety of the running route inputted by a driver, etc., and to display a section in which a vehicle can not be run and a congested section and the reasons when such sections are included. SOLUTION: A route propriety judgment device 7 temporarily stores the route inputted via a running route input means 4. The route propriety judgment device 7 checks whether an input route is proper or not, based on the passing direction rules (for instance, data of the approach prohibition for each intersected point, turning to the left and right prohibitions and limit time, etc.,) stored in a road map data base. The route propriety judgment device 7 checks whether the input route is proper or not based on the latest traffic information (an accident, congestion information, etc.) obtained via a traffic information obtaining means 6. If a section which is not proper as the running route exists, the improper section and the reason are displayed with the map including the improper section on the screen of an image display device 13 in a display device 11. |
