The WABCO OnSide Blind Spot Detection System is a radar-based system designed for commercial trucks and trailers to help reduce the risk of accidents. This system alerts drivers of the presence of a moving vehicle in the truck's blind spot and provides a side collision warning to minimize risk of blind spots drivers cannot see in rearview or side view mirrors. OnSide uses advanced short radar to detect a moving vehicle in the blind spot and then alerts the driver with a visual signal. When the truck's turn signal is engaged, the system provides a more assertive warning in the form of an audible signal or a seat vibration.