To reduce the stressful effects of an impact and help keep the body in the right place, the Belts system uses dual pretensioners in the front seats, a pretensioner with load limiter in the outer rear seats, and a load limiter in the central rear seat. Load limiters are designed to reduce tightness of the belt sufficiently to relieve pressure against the thorax and shoulder. It has contributed significantly to the reduction of injuries. The most common occupant protection system today is the three-point safety belt, which holds the occupant in his or her seat and prevents the body from being subjected to uncontrolled movements and forces. The pretensioners have a lower deployment threshold than the Airbags so that they may deploy in a collision that is not enough to deploy the front airbags.
