REAR COLLISION WARNING DEVICE FOR A TRUCK TRAILER

A rear collision warning device for trailers that may include one or more sensors, a control circuit, and one or more warning devices. In one aspect, the sensors are configured to monitor a predetermined zone behind and/or alongside a trailer and to optionally trigger warnings as predetermined criteria are satisfied. In another aspect, the control circuit controls the warning devices to emit a warning signal in the form of flashing lights, strobes, audible alarms, and the like, or to send warning notifications to a remote server, an app, or to a cab mounted display. The sensors, circuits, and warning devices are optionally mounted together in a separate housing and mounted at or near the side and/or rear of the trailer.