The WABCO TailGUARD is a rear blind spot detection system with active braking designed to help mitigate rearward collisions. Active braking is enabled when paired with WABCO Roll Stability Support (RSS) on trailers. TailGUARD monitors stationary and moving objects behind the trailer, such as pedestrians, vehicles, cargo, and infrastructure, to activate vehicle brakes to slow or stop the vehicle to prevent impending collisions. Sensors mounted to the trailer monitor an approximately 6' radius, and activate if the brakes are not applied within two or more feet of the object.