Commercial Driver’s License (CDL) Practice Exam

Empty trucks require longer stopping distances compared to loaded trucks primarily due to the lack of weight that provides traction and stability. When a truck is loaded, the additional weight increases the friction between the tires and the road surface, allowing the vehicle to stop more effectively and quickly. The momentum of a loaded truck is also managed better because the load helps to keep the wheels planted, enhancing braking performance. Conversely, when a truck is empty, it is lighter and can experience a delay in the braking effect. This means that it can skid more easily and takes a longer distance to come to a complete stop. Factors such as tire conditions, road surface, and weather can also influence stopping distances, but the general principle remains that an empty truck will require longer stopping distances due to the reduced weight and traction.