| 摘要 |
A plurality of traveling routes are computed with a traveling route processing section using current position, destination information, and map information. A traveling route is set based on traffic jam estimation information obtained by processing VICS data or traffic conditions in the past with the function of time, and guidance is provided on this traveling route. When any change is recognized in traffic conditions on the traveling route outside a display area currently being displayed, the reduction scale is changed so that a display area including the site of change in traffic conditions is displayed. With the features, a user can easily recognize changes in traffic conditions and determines whether running is to be continued as it is or not, or from where the current or estimated traffic jam should be evaded, so that the user is well informed of traffic conditions and excellent and smooth guidance can be provided. |
