What are the airbags?
Seat belts are at all cars since 50-ies of the last century. But modern machines are installed throughout with airbags that expand on impact, than actually soften the blow of head. This device effectively triggered with seat belts. In a frontal collision the belt catches a person at an early stage and keeps him, but it is not able to protect the neck from whiplash injury.
Whiplash injuries is throw forward, which can cause stretching of the neck muscles and tendons, dislocation of the vertebrae and the spinal cord gap. In order to avoid this there are airbag.
Today airbags are distinguished by the installation site and volume. Frontal airbags reach a volume of 100 liters. But only some of them are disclosed in the depending pin. The system recognizes independently which of them is disclosed.