| 摘要 |
PURPOSE:To effectively evade the contact between vehicles each other in a place where a visuality is bad, such as a T character road, etc., reducing in cost and facilitating maintenance. CONSTITUTION:A radar device 56 detecting an obstacle which exists forward by transmitting an electromagnetic wave forward, is loaded on a first vehicle A. The detection is performed by changing the electromagnetic wave transmitted from the radar device 56 to the direction of the road which can not be seen from the first vehicle A by a reflector 11 installed on the road end forward the first vehicle A in a place where a visuality is bad such as a T character road, etc. When the possibility of the contact with a second vehicle B exists by the detection, a contact evasion measurement such as the alarm ringing by the first vehicle A is taken. In the first vehicle A, the fact that its own vehicle approaches the place where the visuality is bad, is detected by a marker 12 provided on a road surface and the judgment logic of a contact possibility is changed. |
