it stopped. A seat belt applies an opposing force to the driver and passengers to prevent them from falling out or making contact with the interior of the car (especially preventing contact with, or going through, the windshield). Seat belts are considered primary restraint systems (PRSs), because of their vital role in occupant safety.

Effectiveness

An analysis conducted in the United States in 1984 compared a variety of seat belt types alone and in combination with air bags.

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