Types of Semi Truck Accidents Semi trucks are hefty due to their size and weight and can easily roll over at any speed. These accidents can result in serious injuries for those involved. The most frequent cause of semi-truck accidents is driver error. The rollover accidents can also be caused by other causes. Rear-End Collisions A serious injury can result from a vehicle colliding with another vehicle. This is especially the case if commercial or semi-truck is involved. These vehicles can weigh as much as 80,000 pounds and cause serious injur