VEHICLE WAS INVOLVED IN A FRONT END COLLISION WHILE TRAVELING APPROXIMATELY 30MPH. THE AIRBAGS DEPLOYED AND THE DRIVER WAS WEARING SAFETY BELT. AFTER EXITING VEHICLE, A FIRE WAS DISCOVERED NEAR THE BOTTOM OF THE B-POST. FIRE BURNED AND MELTED THE INTERIOR TRIM AND SEATBELT, AS WELL AS CAUSING HEAT DAMAGE TO THE DRIVER'S INTERIOR DOOR AND WINDOW. FIRE WAS EXTINGUISHED WITH A DRY CHEMICAL EXTINGUISHER. FIRE DEPARTMENT INVESTIGATION ALSO FOUND HEAVY FIRE DAMAGE TO THE SEATBELT PRETENSIONER, WHICH WAS LOCATED IN THE AREA OF FIRE ORIGIN. *TR