Types of Semi Truck Accidents Due to their size and weight semi trucks are extremely heavy and are able to roll at any speed. These accidents could cause serious injuries for those involved. The most frequent cause of semi truck accidents is driver error. However, other factors can also contribute to the possibility of a rollover accident. Rear-End Collisions If a vehicle rear-ends a vehicle it could cause serious damage. This is particularly relevant when a commercial vehicle like a semi-truck is involved. These vehicles can weigh as much as