Types of Semi Truck Accidents Due to their weight and size, semi trucks are top-heavy and can easily roll over at any speed. These accidents can result in serious injuries to those who are involved. Driver error is the most common reason for semi-truck accidents. However, rollover accidents can be caused by other causes. Rear-End Collisions When a vehicle rear-ends another the result could be serious damage. This is especially true when a commercial truck like a semi-truck is involved. These trucks can weigh as much as 80,000 pounds, and the