| 摘要 |
PROBLEM TO BE SOLVED: To compose meaningful information related to the anticipated arrival road or the recommended route far in advance from the time to propose and to propose without losing the timing more complicated proposal contents. SOLUTION: A map storage means 1 stores road-related information and a position-related information detection means 2 detects the position of a vehicle to presume the position in the map corresponding to the position a vehicle is heading for. A proposal means 3 is to search the random and meaningful information related to the road in which the arrival of the vehicle is anticipated accordingly based on the road-related information, then to propose the meaningful information when the timing is matured, after the meaningful information is composed well in advance. |
