INVOLVED IN A HEAD-ON COLLISION. VEHICLE (TRUCK) WAS HIT BY AN ONCOMING VEHICLE AT AN APPROXIMATE 45 DEGREE ANGLE APPROXIMATELY 2 FEET RIGHT OF CENTER OF THE TRUCK ON THE FRONT BUMPER. THE ONCOMING VEHICLE WAS TRAVELING AT APPROXIMATELY 40 MPH. THE TRUCK WAS SKIDDING AT APPROXIMATELY 20 MPH. UPON IMPACT, THE DIRECTION OF TRAVEL OF THE TRUCK WAS REVERSED - THE TRUCK BOUNCED BACK APPROXIMATELY 3 FEET - AS EVIDENCED BY THE SKID MARKS AND RESTING POSITION OF THE TRUCK. THE DRIVER- SIDE AIRBAG NEVER DEPLOYED. SHOULD THE AIRBAG HAVE DEPLOYED?