| 摘要 |
PROBLEM TO BE SOLVED: To make a user recognizable user's own position at a certain time. SOLUTION: At a display part 1, a map is displayed with user's own position indicated by a marker 3 as the center and the road 2' is set route. By pressing a button 5, a time in the past is set and the set time is displayed at a time display part 4. At the display part 1, the map based on past position information stored in a memory is displayed and the track of user's own vehicle is traced. By pressing the button 6, the future time is set and the set time is displayed at the time display part 4. The map of a spot for which a predicted traveling distance obtained from the average speed of movement is moved on the route is displayed at the display part 1. The predicted arrival spot of the user's own vehicle at the future time is confirmed. |
