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Car Driving and Safety

The Car Driving and Safety Channel offers safety tips and expert advice. Become a better driver with the Car Driving and Safety Channel.

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How does an air bag work

Air bags have saved thousands of lives since their introduction in the early 1980s. So how do they work?

Why are they replacing all of the traffic lights in my town?

In my town they are replacing all of the traffic lights with these new lights that look like they are made of hundreds of tiny bulbs. Why are they replacing all of the lights?

How does a traffic light detect that a car has pulled up and is waiting for the light to change?

There is something exotic about the traffic lights that "know" you are there -- the instant you pull up, they change! How do they detect your presence?

How do the automobile ignition keys with chips embedded in them work?

A friend of mine just bought a new car and it has a neat security feature. The ignition key has what looks like a microchip embedded in it. The owners manual says that without this chip the engine either will not start or will start and then die immediately. How does this microchip on the key prevent the engine from starting?

How Airbags Work

Statistics show that airbags reduce the risk of dying in a head-on crash by 30 percent. Learn the science behind the airbag, what its problems are and where the research is heading.

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