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Few individuals realise that the conception of air bags - a soft buffer to impact against in a crash - has been around for decades. The first patent on an inflatable crash-landing device for aeroplanes was filed during World War 2. During the 80s, the first commercial airbags were a safety feature in vehicles.

Up to the present day, stats indicate that airbags reduce the chance of death in a square anterior smash by about thirty percent. Now there are also seat-mounted and door mounted side airbags. Incredibly, some cars go far further than just having twin airbags, and alternatively have six to eight air bags.

The goal of an air bag is to decelerate the driver’s advanced motion as evenly as possible in only a fraction of a second. An air bag can accomplish this job in 3 steps:

• The bag is composed of a thin, nylon fabric that’s folded inside the dashboard or steering wheel and, these days, the door or seat
• The sensor is the gadget that instructs the bag to balloon. Ballooning takes place when there’s a smash force equating to motoring into a brick wall at around 15 miles per hour. A switch is flipped when there is a weight movement that cuts off an electrical contact, telling the detectors that a smash has taken place. The sensors get data from an accelerometer built into a microprocessor chip
• The airbag’s inflation facility combines sodium azide (NaN3) with potassium nitrate to produce nitrogen gas. Hot blasts of the nitrogen gas balloon the airbag

Due to the superfast inflation of an air bag, it’s a safety requirement that the driver and passenger sit in the seat with a straight back leaving a good distance between their face and the steering wheel / dashboard - this sets aside time for the bag to inflate while the driver/passenger are being thrust forwards by the impact of the accident.