Chocks are commonly made from which materials?

Chocks are commonly made from which materials?

• A. Wood or rubber
• B. Metal only
• C. Glass
• D. Fabric

Answer: (A)

Wheel chocks must hold a wheel in place by pressing against the tire and the ground. Wood and rubber are the typical choices because they provide good grip and enough firmness without damaging the tire. Wood chocks are sturdy, inexpensive, and easy to shape. Rubber chocks grip well and can compress slightly to fit the tire and surface, giving reliable friction. Glass is brittle and would break, fabric isn’t strong enough to keep a wheel from rolling, and metal alone can be heavy and may damage tires or cause sparks. For these reasons, wood or rubber chocks are commonly used.

Wheel chocks must hold a wheel in place by pressing against the tire and the ground. Wood and rubber are the typical choices because they provide good grip and enough firmness without damaging the tire. Wood chocks are sturdy, inexpensive, and easy to shape. Rubber chocks grip well and can compress slightly to fit the tire and surface, giving reliable friction. Glass is brittle and would break, fabric isn’t strong enough to keep a wheel from rolling, and metal alone can be heavy and may damage tires or cause sparks. For these reasons, wood or rubber chocks are commonly used.