DRIVING IN A LIGHT RAIN, I LOST CONTROL AT 75MPH AND HIT THE REAR OF A SEMI TRAILER. THE CAR STARTED TO SLIDE SIDEWAYS AND I PRESSED THE BRAKES HARD AND THE CAR BEGAN TO SKID. THE SKID CONTINUED UNTIL MY CAR REACHED THE SHOULDER, WHEREUPON IT BEGAN TO ROLL. THE CAR ROLLED A TOTAL OF THREE TIMES AND CAME TO REST ON ITS WHEELS. EVEN THOUGH THE ROOF AND ALL FOUR DOORS HAD EXTENSIVE BODY DAMAGE, NONE OF THE AIRBAGS DEPLOYED. I WAS RESTRAINED BY THE SEAT BELT BUT I FEEL THAT THE AIRBAGS SHOULD HAVE DEPLOYED. THE CAR WAS TOTALED AND SOLD FOR SCRAP. *TR