Interpretation ID: nht87-2.85

TYPE: INTERPRETATION-NHTSA

DATE: 09/01/87 EST

FROM: NHTSA

TITLE: CONSUMER INFORMATION

ATTACHMT: ATTACHED TO DECEMBER 19, 1988 LETTER FROM JONES TO REIZES AND APRIL 6, 1988 LETTER FROM REIZES TO STEED

TEXT: AIR BAGS

An air bag is one type of automatic crash protection equipment now available on many new cars. It is a very effective safety device that is built into the steering wheel or dashboard of a car. In a frontal crash, it inflates rapidly to cushion the o ccupant from violent impact with the hard interior surfaces of the car. An air bag should always be used in combination with safety belts to provide the best protection available in all kinds of crashes.

WHAT CAUSES THE AIR BAG TO INFLATE?

In a serious frontal crash -- equivalent to hitting a brick wall at a speed greater than 12 miles per hour -- a crash sensor activates the air bag. Within 1/25 of a second after impact, the bag is inflated to create a protective cushion between the occu pant and the vehicle interior, such as the steering wheel, dashboard and windshield. The air bag inflates and then deflates rapidly.

The sensors are switches which are activated by a crash. They discriminate between impacts intended to inflate the bag (those severe enough to cause injury) and events not intended to inflate the bag (i.e., "fender-benders" in parking lots, or panic stops).

HOW RELIABLE ARE THEY?

All parts of air bag systems are sealed until used and are designed to have an effective operating life exceeding that of the vehicle in which they are installed. Air bags installed in cars ten years ago can still protect in crashes today. Once an air bag has deployed, it must be replaced.

DO AIR BAGS EVER FAIL TO INFLATE IN SERIOUS CRASHES?

A malfunction is very unlikely. Since they were introduced in 1972, air bags have inflated as designed in hundreds of serious frontal crashes.

HOW MUCH WILL AN AIR BAG COST?

The cost will depend on how many are produced. These costs are relatively high now but are expected to drop significantly as more and more cars with air bags are manufactured. Government estimates at high production levels are $ 320 for air bags for bo th the driver and passenger, and $ 220 for driver only systems. New technology could lower these amounts even more.

DO I NEED TO KNOW ANYTHING SPECIAL TO OPERATE A CAR WITH AN AIR BAG IN IT?

No. The car's owner's guide will explain the proper use of the system. The car is also equipped with an indicator that provides the driver with information about the readiness of the air bag. Labels are placed in the car to alert service personnel tha t the car has an air bag. Again, remember to wear a safety belt too so that you are protected in all types of crashes.

HOW CAN I GET AN AIR BAG?

Many manufacturers are planning to offer air bag systems over the next few years.

1987

Acura Legend Coupe BMW L7, 7-Series Ford Tempo, Topaz All Mercedes-Benz Porsche 944 Turbo Volvo 7-Series

1988

Acura BMW Ford Mercedes Porsche Volvo

Olds Delta 88 Chrysler - selected lines Saab 9000

1989

Acura BMW Ford Mercedes Porsche Volvo Delta 88 Chrysler Saab 9000

Nissan - selected lines

Toyota - selected lines

1990

Acura BMW Mercedes Porsche Volvo Chrysler Saab 9000 Nissan Toyota

1 million Fords - selected lines

500 thousand GM cars-selected lines

1991

Acura BMW Ford Mercedes Porsche Volvo Chrysler Saab 9000 Nissan Toyota GM

Subaru - selected lines

1992

Acura BMW Ford Mercedes Porsche Volvo Chrysler Saab 9000 Nissan Toyota Subaru

3 million GM cars - selected lines