| 摘要 |
PROBLEM TO BE SOLVED: To enable an own vehicle to accurately determine its approach road to travel without using map data of an on-vehicle navigation device, even when a roadside device is not installed at each approach road of an intersection.SOLUTION: On the basis of a virtual travel track of a pseudo vehicle on a virtual route for each approach road to a target intersection generated from road linear information received by a roadside device 1, an own vehicle positional coordinate successively detected by a position detector 3, and an azimuth angle of the own vehicle determined from the own vehicle positional coordinate, an approach road corresponding to the virtual travel track of which a positional relationship with the own vehicle positional coordinate is close and in which the own vehicle and the azimuth angle are similar with each other is determined as an approach road on which the own vehicle travels. |
