A device for determining the rapprochement between moving vehicles

摘要

The present invention provides means adaptable for use on vehicles to determine the proximity between vehicles. The apparatus generally provides means for transmitting a signal and means for receiving a signal on a vehicle with the transmitted signal preferably ultrasonic and proportional to the speed of the transmitting vehicle. The emission member is mounted on the transmitting vehicle in a manner so as to automatically selectively orient itself so that the transmitted signal follows the path of the vehicle under changing road contours and is preferably further provided with means for particular orientation for turns or merging traffic situations.