UPON MERGING BACK ONTO THE HIGHWAY CONSUMER OVER CORRECTED THE STEERING WHEEL. TO RECTIFY THIS PROBLEM THE CONSUMER DEPRESSED THE BRAKE PEDAL AND TURNED INTO THE SKID. THE BRAKES LOCKED UP AND THE TRUCK CRASHED INTO A MOUNTAIN HEAD ON, THEN ROLLED OVER TWICE. NONE OF THE TRUCKS AIR BAGS DEPLOYED UPON IMPACT. THE TRUCK SUSTAINED SEVERE FRONTAL DAMAGE AND THE WINDOWS BUSTED OUT, EXCEPT FOR THE FRONT WINDSHIELD, AND THE DRIVER AND PASSENGER SIDE WINDOW. THE DRIVER DIDN'T SUSTAIN ANY INJURIES. THE CAUSE OF THE BRAKES LOCKING UP AND THE NON DEPLOYMENT OF THE AIR BAG HAS YET TO BE DETERMINED.*AK