seat belt

The original car seat belt was invented by the Swedes. Since the Buick sedan was used as a standard configuration in the 1940s, the United States has established and used the seat belt as a mandatory federal regulation, which has led to the launch of a large number of seat belts. universal. The seatbelt at the time was only a simple two-point waist restraint, and the tightness of the restraint was entirely regulated by the driver himself.

After more than 40 years of development, the seat belts have gradually matured. Nowadays, the seat belts are all made of highly-strength synthetic fibers. Self-locking retractors are used to achieve the shoulders and waists of drivers and passengers at the same time. Constrained three-point design. After the seat belt is fastened, the retractor automatically tightens it. When the vehicle is in emergency braking, frontal collision or rollover, the occupant will subject the seat belt to a rapid and violent stretching. The lock function can hold the seat belt in a moment, so that the occupant clings to the seat to avoid falling out of the car or collision injury.

According to agency statistics, in all potentially fatal car accidents, approximately 45% of lives could be saved if seat belts were properly used; this ratio would increase to 60% if airbags were used at the same time.

So don't forget to wear your seat belt when you drive.