Ever since real adventures have become more and more rare for humans, all that's left are wars, civilisation illnesses, the search for adventure and the accidents. The subject here is accident safety and prevention. Whereby, all measures which can prevent the the injury or the death of persons are meant. Not only the passengers of a vehicle are taken into consideration, but also those who could be injured or killed by the vehicle itself.
Basically one distinguishes between active and passive accident prevention. Active prevention concerns all the factors involved so that accidents don't happen in the first place. Among these factors are, the brakes, the chassis, the lighting and the comfort- and warning systems. Passive prevention is necessary when an accident has already occured. Included here are, restraining measures like seat-belts or air-bags and reinforcing systems for the seating and the body-workIt all began in approx. 1960 with the introduction of the first safety-orientated car body. Until then, the best car body was thought to be the one which was damaged as little as possible after an accident. Now it is recognised, that it's far more important to reduce the dangerous affects that extreme acceleration and deceleration can have on the brain, ideally, avoiding the situation in the first place. This measured force is expressed in 'G'. Whereby 1 G is the equivalent of 9,81 meters/sec.² and thus the acceleration, which is the same for all objects, if they are falling through a vacuous environment. In very serious accidents, and despite all the precautions taken, the passengers can be exposed to forces of 50 Gs and more. 10/10