| 摘要 |
PROBLEM TO BE SOLVED: To perform detailed guiding even at a newly installed guide point by changing the details and timing of the guide according to a judgment result of whether a vehicle is in stop or not. SOLUTION: A position-calculating means 2 calculates a current position and judges whether a current position is between (i-1)th and ith guide points counting from a start point (i: a positive integer). Then, it is judged whether distance when driving to the ith guide point according to a driving path from the current position is equal to or more than a threshold or not. The threshold is set to a distance for starting guide before the guide point and no guide is made when the distance is not equal to or more than the threshold. A stop- judging means 11 judges whether a vehicle is in stop or not and returns to a threshold judgment during driving, and a guide timing determination means 5 starts a guide for the ith point using a guide transfer means 6. This method allows a more detailed guide even if guide points are close each other. |
