The air bag safety feature was introduced during these years. Ventilated front disc brakes and a driver's air bag became standard. Recovery of the stages would be by parachutes and air bag. Punctures to the air bag may be caused from debris on the road. A related use of an impact detector is as automobile air bag sensor. Headlamp washers, cruise control and a front passenger's air bag were added. The 1997 model was the first to include a full length Air bag. This change could cause the passenger air bag sensor to not detect an occupant. There is an air bag behind the axle. The air bag is approximately long by wide. A driver's side air bag was made standard. All L7 models were built with automatic transmissions and a standard driver's air bag. He was knocked unconscious, but the air bag likely saved his life. A driver's side air bag was now standard. The braking system ABS and dual front air bag driver and passenger are optional.