Although these companies typically maintain strict hiring, training, and retention practices, many accidents involve driver error. According to the Federal Motor Carrier Safety Administration (FMCSA), most delivery truck accidents stem from speeding, driver inattention, or unsafe lane changes. Some other causes involve impaired driving and aggressive driving resulting in road rage. In addition, some accidents occur because of an issue with the actual vehicle. This includes unsafe tires, brake system issues, defective or broken lights and signals, and inoperative windshield wipers. Companies that do not comply with federal and state trucking regulations may face liability for accidents.