| 摘要 |
PROBLEM TO BE SOLVED: To select a desirable route more speedily by changing the search order of multiple routes to be searched. SOLUTION: A road which matches the current position of a mobile body is decided (step SC2). It is discriminated whether there is only one searched route that the road matching the current position of the mobile body corresponds to (step SC8) and when so, the route is regarded as a selected route. Then the priority table meeting the search conditions of the selected route is increased so that when a next route is searched for, the route having the search conditions is searched for more speedily (step SC24). |
