TRAFFIC WAS STOPPED ON THE HIGHWAY, I CAME TO A STOP, THE SUV BEHIND ME DID NOT REALIZE WE WERE STOPPED. HE HIT ME AT ALMOST FULL SPEED, THIS PUSHED ME INTO THE CAR INFRONT OF ME, AND THEM INTO THE CAR IN FRONT OF THEM. BASICALLY A 4 CAR PILE UP, THE CAR THAT HIT ME AND THE CAR I WAS PUSHED INTO BOTH BLEW THEIR AIR BAGS. I WAS HIT THE HARDEST AND MY AIRBAG DID NOT BLOW, I HAD MY CAR IN THE SHOP TWO WEEKS BEFORE FOR WARRANTY WORK AND RECALLS, NOTHING WAS EVER SAID ABOUT THE AIRBAGS. I HIT MY HEAD ON THE STEERING WHEEL. I'M NOT SURE WHY MY AIRBAG DID NOT GO OFF. *TR