TRW Adaptive Cruise Control (ACC) "Stop & Go" uses 77GHz Long Range Radar and at least one 24GHz Short Range Radar sensor to bring a vehicle to stop and accelerate when appropriate. A Mid Range Radar system is being developed.

Radar sensors in Collision Warning 1 monitor the road ahead and alert the driver via sensory feedback to a potentially imminent crash. Collision Warning 2 adds a video camera.