Abstract: An anti-collision radar device includes a radar mount for fixation to an outer peripheral side of a powerless trailer carriage, and a radar mounted in the radar mount for sensing vehicles coming from left and right sides. The radar mount defines a reference surface. The radar has a sensing surface. The extending direction of the sensing surface is intersected with the extending direction of the reference surface so that a predetermined angle of 30° to 50° is defined therebetween. Thus, the anti-collision radar device can expand the radar sensing range and reduce the visual field blind spot of the driver of the car, thereby ensuring the safety of the car when towing the powerless trailer carriage.

Abstract: A radar system installed in a trailer vehicle including a master vehicle having a main connector disposed at a rear side thereof and a slave vehicle having a sub connector disposed at a front side thereof and pivotally connectable to the main connector is disclosed to include a host unit mounted in the master vehicle and a radar mounted at the slave vehicle and electrically connected to the host unit after connection between the main connector and the sub connector. Thus, this arrangement achieves the proposed efficacy and purpose of the present invention to facilitate electrical connection and disconnection between the host unit and the radar, allowing the driver to learn the information of the warning signal generated by the radar.

Abstract: An anti-collision radar device includes a radar mount for fixation to an outer peripheral side of a powerless trailer carriage, and a radar mounted in the radar mount for sensing vehicles coming from left and right sides. The radar mount defines a reference surface. The radar has a sensing surface. The extending direction of the sensing surface is intersected with the extending direction of the reference surface so that a predetermined angle of 30° to 50° is defined therebetween. Thus, the anti-collision radar device can expand the radar sensing range and reduce the visual field blind spot of the driver of the car, thereby ensuring the safety of the car when towing the powerless trailer carriage.