explan Anti-Lock Braking systems(ABS) Air-bag angSeat belt

An anti-lock braking system (ABS) (translated from German, Anti-Blockier System) is a safety system on motor vehicles which prevents the wheels from locking while braking. A non-locking braking system allows the driver to maintain steering control under heavy braking, by preventing a skid, and allowing the wheel to continue to forward roll and create lateral control, as directed by driver steering inputs. Disadvantages of the system include increased braking distances under some limited circumstances (ice, snow, gravel, "soft" surfaces), and the creation of a "false sense of security" among drivers who do not understand the operation, and limitations of ABS.
air bag



An automotive passive restraint consisting of a bag that is designed to inflate upon collision and prevent passengers from pitching forward.
A large inflatable bag made of strong rubber, used by rescue workers to lift a vehicle or heavy machinery or debris that has fallen upon or otherwise trapped a victim.
seat belt
A safety strap or harness designed to hold a person securely in a seat, as in a motor vehicle or aircraft. Also called safety belt

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http://auto.howstuffworks.com/auto-basics-channel.htm