I WAS DRIVING ON HWY 40 E APPROACHING EXIT 153 IN HEAVY RAINFALL. APPROXIMATELY 0.25 MILES FROM THE EXIT THE TRUCK ALREADY ON THE EXIT AHEAD OF ME BEGAN APPLYING ITS BRAKES. PRE-BRAKING MEASURES WERE TAKEN. THE WHEELS LOCKED UP AND I COLLIDED WITH THE TRUCK IN FRONT OF ME AND FLEW FORWARD INTO THE STEERING WHEEL. I HAD BEEN BRAKING THE ENTIRE TIME, BUT MY SEAT-BELT DID NOT LOCK INTO PLACE. MY AIRBAG DID NOT DEPLOY. I SUFFERED BRUISING, SEVERE HEADACHES, AND MINOR CUTS AS A RESULT. INSURANCE DECLARED CAR AS TOTAL LOSS. *TR