| 摘要 |
PROBLEM TO BE SOLVED: To start branching guide from a point most appropriate according to running environment. SOLUTION: A starting point for branching guide is changed according to running environment. Far example, while running at night, the branching guide is started with the paint further away from a road branching paint compared to running in daytime, and while running in rainy weather, the branching guide is started with the point further away from the road branching point compared to running in cloudy day or clear day. Thereby, even a running environment changes, a course at a branching point is recognized with a branching guide with sufficient allowance in time, for safe and sure running on a search route toward a destination. |
