Samenvatting
The National Transportation Safety Board determines that the probable cause of this accident was the failure of the truck driver to respond to appropriate regulatory and warming signs and to properly use the service brakes and transmission for speed control purposes which permitted the tractor-semitrailer to accelerate to a high rate of speed before entering the city of Frostburg. Contributing to the accident was the improper adjustment of the trailer's service brakes due to inadequate vehicle maintenance.