Where should wheel chocks be placed?

Where should wheel chocks be placed?

• A. In front of the front wheel
• B. Behind the rear wheel only
• C. In front of and behind the same rear wheel
• D. On the opposite side of the wheel

Answer: (C)

To prevent movement, wheel chocks should block the wheel from rolling in either direction. Placing a chock in front of and behind the same rear wheel does exactly that—one chock stops forward motion, the other stops backward motion—so the wheel is held firmly and cannot move. Using a chock only in front of the front wheel or only behind the rear wheel leaves a direction open for movement, and placing a chock on the opposite side doesn't fully secure it either. Sticking with two chocks on the same wheel provides maximum stability during maintenance or when parked on an incline.

To prevent movement, wheel chocks should block the wheel from rolling in either direction. Placing a chock in front of and behind the same rear wheel does exactly that—one chock stops forward motion, the other stops backward motion—so the wheel is held firmly and cannot move. Using a chock only in front of the front wheel or only behind the rear wheel leaves a direction open for movement, and placing a chock on the opposite side doesn't fully secure it either. Sticking with two chocks on the same wheel provides maximum stability during maintenance or when parked on an incline.