Car Seat Belt
Specifications
Seat belts also absorb energy by being designed to stretch during any sudden deceleration. A seat belt or seatbelt, sometimes called a safety belt is a safety harness designed to secure the occupant of a vehicle against harmful movement that may result from a collision or a sudden stop. As part of an overall automobile passive safety system, seat belts are intended to reduce injuries by stopping the wearer from hitting hard interior elements of the vehicle, or other passengers, are in the correct position for the airbag to deploy and prevent the passenger from being thrown from the vehicle. Seat belts also absorb energy by being designed to stretch during any sudden deceleration, so that there is less speed differential between the passenger's body and their vehicle interior, and also to spread the loading of impact on the passenger’s body.
The final, so-called 'third impact' after a passenger's body hits the car interior, airbag or seat belts, is that of the internal organs hitting the ribcage or skull. The force of this impact is the mechanism through which car crashes cause disabling or life threatening injury. The sequence of energy is dissipating and speed reducing technologies - crumple zone - seat belt - airbags - padded interior, are designed to work together as a system, to reduce the force of this final impact.
As with adult drivers and passengers, the advent of seat belts was accompanied by calls for their use by child occupants, including legislation requiring such use. Generally children using adult seat belts suffer significantly lower injury risk when compared to non-buckled children.
It was observed that this measure was accompanied by a 10% increase in fatalities and a 12% increase in injuries among the target population.[41] In crashes, small children who wear adult seatbelts can suffer "seat-belt syndrome" injuries including severed intestines, ruptured diaphragms and spinal damage. There is also research suggesting that children in inappropriate restraints are at significantly increased risk of head injury,[42] one of the authors of this research has been quoted as claiming that "The early graduation of kids into adult lap and shoulder belts is a leading cause of child-occupant injuries and deaths."[43] As a result of such findings, many jurisdictions now advocate or require child passengers to use specially designed child restraints. Such systems include separate child-sized seats with their own restraints and booster cushions for children using adult restraints. In some jurisdictions children below a certain size are forbidden to travel in front car seats."[44]
Seat belts are by far the most important safety feature of your car. No matter what speed you are going, or how far you will be traveling it is extremely important to always have your seat belt on. If you are wearing a seat belt at the time of a crash, your risk of being killed is reduced by about 50 percent. Seat belts protect the driver against injury in a collision.
More and more states are now requiring everybody to wear a seat belt while the car is in motion. This is because of the seriousness that is involved. Your passengers will be thrown against the dashboard, through the windshield, or out a door that has sprung open in a crash. In addition, seat belts help keep you behind the wheel and in control of the car if you have to swerve, brake abruptly, or are struck by another vehicle. A seat belt will prevent you from colliding with something inside the car, and also keep you from being thrown from the car
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