TRW’s Active Head Restraint system is a mechanical concept designed to help slow the velocity of the head as it moves backward in a crash scenario. This can help to reduce injuries by whiplash forces on the occupant.  Combining the TRW AHR with crash sensing systems, one can achieve excellent delta-V and threshold discrimination in a variety of rear impact events. TRW testing has shown excellent results in FMVSS, IIHS, and EuroNCAP test configurations. And the AHR allows for a larger initial backset distance between the occupant’s head and the backrest for occupant comfort.