ROUTE SEARCH METHOD, ROUTE SEARCH DEVICE, COMPUTER PROGRAM FOR PERFORMING ROUTE SEARCH, AND RECORDING MEDIUM ON WHICH THE COMPUTER PROGRAM IS RECORDED

摘要

PROBLEM TO BE SOLVED: To solve the problem that direct guidance to a destination is not performed when the closest road to a destination is a narrow street. SOLUTION: A trunk road in the vicinity of the destination (target trunk road) is specified for the destination in a narrow street network. An intersection in the trunk road allowing the access to the narrow street network surrounding the destination (target intersection) is extracted. A route search (narrow street search) from the intersection (target intersection) to the destination and a route search (main route search) from a start point to the intersection (target intersection) are independently performed, and then integrated to each other. COPYRIGHT: (C)2010,JPO&INPIT