| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique enabling recognition as to whether a searched route includes a yet-to-travel road when setting a movement planned route on a navigation device.SOLUTION: A navigation device determines whether a road corresponding to a present position is a recognized road on the basis of a movement history information group, and changes movement history information so that a road section once travelled is defined as a recognized road. In first display processing, a searched route is displayed in overlay on a map displayed on a display device. Further, if an unrecognized road exists in a road section constituting an individual searched route as a result of determining on the basis of the movement history information group, a fact that the unrecognized road exists is displayed in a specific mode in which the fact is recognizable. The specific mode means that an unrecognized road, a recognized road and an extension road are displayed in different modes, and that a tone of a display color displaying the unrecognized road may differ from that of a display color of the recognized road and extension road. |
