| 摘要 |
A mobile terminal device has a display means for indicating a guidance of a route retrieved by a route retrieval means and a GPS receiver means for detecting the present location. A route retrieval server has an operation service information database for collecting and storing the present location of each bus running on bus lines and an alternative route guiding means for evaluating alternative bus route to provide a guidance. When the guided route includes a walking route block, the route retrieving means makes reference to the operation service information database in accordance with the present location of the mobile terminal device to identify bus services which a user of the mobile terminal device can use for retrieving a route alternative to the walking route block, while the alternative route guiding means compares the route data between the alternative route and guided route. When the alternative route is more favorable than the guided route, the alternative route guiding means sends alternative route information indicating presence of the alternative route to the mobile terminal device, displays the guided route on a display means, and indicates the presence of the alternative route. |
