Types of Semi Truck Accidents Due to their weight and size, semi trucks are top-heavy and are able to roll over at any speed. Accidents can cause serious injuries for the people involved. Driver error is the primary reason for semi-truck accidents. However, other factors can be a contributing factor to accidents involving rollovers. Rear-End Collisions If a vehicle rear-ends a vehicle it can cause severe damage. This is particularly true if commercial truck or semi-truck is involved. These trucks can weigh as much as an 80,000-pound weight, a