Indicating apparatus from preventing vehicles from colliding with each other as they pass

摘要

An indicating apparatus for preventing vehicles from colliding with each other as they pass an intersection of roads includes a vehicle sensing device placed on one of the roads a predetermined distance from the intersection for sensing a vehicle approaching the intersection, an alarm indicating device placed at the predetermined point on the other road, and a control device for causing the alarm indicating device to indicate alarm when the vehicle sensing device detects a vehicle approaching the intersection.