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Airbag

Airbags were invented in 1951 and not required on cars until 1989. A frontal crash at speeds as slow as 14 mph is enough to deploy the airbag. When a chip in the engine senses a crash or a vehicle fire, the airbag fills very quickly with nitrogen gas. Airbags inflate in .02 seconds and deflate immediately after impact. They reduce fatalities by about 8%.