What does "stab braking" involve?

Answer: B — Pressing the brake pedal hard, releasing it during wheel lock, and re-applying.

Stab braking is a braking technique specifically designed to help a driver maintain control of a vehicle while stopping, especially in emergency situations or on slippery surfaces. This method involves initially applying the brakes hard to bring the vehicle speed down quickly. If the wheels lock up, which can happen on slick surfaces, the driver releases the brake pedal to allow the wheels to start rolling again. Once traction is regained, the driver can reapply the brakes. This process of alternating between applying and releasing the brakes helps to prevent skidding and allows for better control of the vehicle during a stop. Understanding stab braking is vital for safely managing large vehicles, particularly in adverse driving conditions.