How should a vehicle with all wheels on the ground be stabilized to prevent horizontal movement?

• A. Apply chocks to the wheels
• B. Use a winch
• C. Install wheel blocks only on the rear wheels
• D. Rely on the parking brake

Answer: (A)

Preventing horizontal movement is about creating a solid physical barrier for the wheels. Wheel chocks fit snugly against the tires and the ground, blocking any tendency of the vehicle to roll in either direction, even if gravity or external forces try to move it. They provide a positive stop that remains effective if the braking system is compromised, which is why they’re preferred over relying on the parking brake alone. A winch is used for moving or securing a vehicle during recovery, not for static stabilization. Blocking only the rear wheels leaves the other wheels free to move, and relying solely on the parking brake can fail on slopes or during handling. Therefore, applying chocks to the wheels is the best method.