| 摘要 |
PROBLEM TO BE SOLVED: To effectively receive the recommended route offer service of a road side beacon. SOLUTION: When a road side beacon is passed, it is judged whether its own designation is within the road side beacon service area or not (S11). When it is within the service area, the designation is left as it is (S12), and when it is out of the area, a virtual designation is set within the area (S13) The designation to be transmitted to the road side beacon is necessarily within its service area, and the offer of a recommended route can be surely accepted. |
