Chocks are strong wedges always placed on the front wheels.

• A. Sometimes
• B. False
• C. True
• D. Never

Answer: (B)

Wheel chocks are wedges used to prevent wheel movement by pressing against the wheel and the ground, blocking any attempted roll. They’re not limited to the front wheels; placement depends on which wheels could move and in which direction. On a slope, you block the downhill wheels; in many settings (like aircraft) you place chocks on both sides of wheels for redundancy, or in front of and behind each wheel. Because of this flexibility, saying chocks are always placed on the front wheels is not accurate. The best understanding is that chocks go on the wheels that could move, on the side that would allow movement, and sometimes on multiple wheels or both sides for safety.