| 摘要 |
PROBLEM TO BE SOLVED: To provide a route search method, a route search system and a route search server, capable of enhancing route search precision by enhancing calculation precision of an estimated travel time when searching a route using a road network, including a link not set with a travel time. SOLUTION: A speed parameter of each link is corrected, based on the total number of links or the total number of nodes in mesh data with the link belonging thereto, and the optimum route is searched using the speed parameter, after being corrected, in this route search method of the present invention wherein the road network comprising the plurality of mesh data divided into mesh-like form is formed of the links and nodes, to search the optimum route including the travel time from a start point up to a destination, using the road network, when the link is set at least with a distance parameter and the speed parameter and not set with the travel time in each link. COPYRIGHT: (C)2008,JPO&INPIT |
