| 摘要 |
PROBLEM TO BE SOLVED: To properly propose useful traffic information, related to a guide route to a designation. SOLUTION: The guide route to the designation is retrieved, on the basis of road map data, and a route which satisfies prescribed conditions is selected from routes branched from a branch point on the retrieved guide route. Furthermore, traffic information is acquired, and the traffic information related to the guide route and selected route is extracted from the acquired traffic information, and the change of traffic state is displayed on the basis of the extracted traffic information. |
