Patent ID: 8401789
Filing Date: 2013-03-19
Classification: G01C,G08G

Abstract:
1. A navigation system, comprising: a route search server including a route searcher for referring to route search network data on a basis of a route search request that includes a departure location and a destination point and for searching for a guidance route that includes a route that makes use of transportation facilities; and a mobile terminal device including a display for displaying the guidance route searched by said route searcher and a GPS receiver for detecting a current position, wherein said route search server has an operation service information database in which the current position of each bus operating on a bus line is acquired and stored, and an alternative route searcher for evaluating and providing guidance for an alternative route that uses a bus, and wherein in the case that a walking route interval is included in said guidance route, said route searcher refers to said operation service information database on the basis of the current position of said mobile terminal device, and searches for an alternative route that substitutes for said walking route interval by specifying a bus that a user of said mobile terminal device can board; and said alternative route searcher compares route data of said alternative route and said guidance route, transmits alternative route information that shows the presence of an alternative route to said mobile terminal device in the case that an alternative route is a more advantageous route than the guidance route, and displays the guidance route on said display to provide notification of the alternative route.