Types of Semi Truck Accidents Due to their size and weight semi trucks are a top-heavy and can easily roll over at any speed. These accidents can result in serious injuries to those involved. Driver error is the primary reason for semi-truck accidents. However, rollover accidents can be caused by other causes. Rear-End Collisions A serious injury can result from collisions between vehicles vehicle. This is particularly true when a commercial truck, like a semi-truck, is involved. They can weigh as much as 80,000 pounds and the impact that res