Safety Features of a Car
Claire Blakeley, Vicki Carnell & Lucy Tomkinson.
Cars today are much safer to travel in than cars ten or twenty years ago. As a result of crash tests, designs have changed and are still changing.
Crumple zones were first introduced in 1959.
Crumple Zones, indicated here in red, were designed to absorb the energy of a collision by bending and breaking in a predictable manner. In doing so, the force of the collision would be diverted away from the passenger's compartment, thereby keeping him or her from serious injury.
The seat belt was introduced by Nash Motors in 1949. Seat belts work in the same principle as crumple zones. They make the change in momentum take longer – so that the force is less.
Airbags help cushion the impact, reducing your momentum more slowly so that the force is less. Airbags are intended to be used as a supplementary device to the seatbelt.