What is the function of a seat belt?

1 Answers
SanIsla
07/30/25 1:56am
The function of a seat belt is to instantly tighten and secure the slack in the belt when a vehicle collides or during emergency braking, firmly restraining the occupant in the seat to prevent secondary collisions. Once the tightening force of the seat belt exceeds a certain limit, the force-limiting device appropriately loosens the belt to maintain stable chest pressure. The car seat belt is a device designed to reduce passenger injuries when the vehicle body is subjected to a severe impact. In high-end cars, in addition to seat belts for both front and rear seats, there is also an airbag system installed. In the event of an accident, the airbag automatically inflates and deploys to prevent occupants from hitting the vehicle body.
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