| 摘要 |
When a vehicle passes through an entrance IC entering a toll road, a present position of the vehicle changes discontinuously because of increased detection error. Continuity is lost between a designated travel road and a history of past designated travel roads. Designation of a correct entrance IC fails. Even in such a case, the correct entrance IC is designated based on the travel road designated before the continuity is lost. A toll is calculated based on the designated entrance IC and an IC, which the vehicle approaches and via which the vehicle is assumed to exit the toll road. If a guide route is designated when passing through an entrance IC, a correct entrance IC is appropriately designated from the travel road and the guide route. |
