WAS TRAVELING 45MPH & STARTED TO APPLY ABS BRAKES TO SLOWDOWN. WAS PRESSING ON ABS BRAKES HARD, BUT VEHICLE FAILED TO STOP. ANOTHER VEHICLE WAS AT DEAD STOP IN FRONT. VEHICLE WAS HIT. BRAKE PEDAL WENT TO FLOOR. NO AIR BAG DEPLOYMENT. SEAT BELT RESTRAINED, BUT NOT ENOUGH. *AK