Best Uses

Proper chock selection, placement, and inspection are critical to preventing unintended vehicle movement. These best practices apply to commercial fleets, aviation, industrial equipment, trailers, and service vehicles.

1. Selecting the Correct Chock

• Match the chock to the tire diameter and width — not just the vehicle type.
• Consider the vehicle weight and load condition (empty vs. fully loaded).
• Choose the correct material for the surface (rubber/urethane for traction, aluminum for weight and portability).
• For sloped or low-friction surfaces, use larger or dual chocks.

2. Proper Placement

• Chock in the direction of potential movement.
• On level ground: typically one chock per wheel.
• On slopes: chock the downhill side and follow your SOP.
• For aircraft and GSE: use fore and aft placement per ramp procedure.
• Ensure full contact with the ground — no debris under the chock.

3. Surface Awareness

• Wet, icy, oily, or loose gravel surfaces reduce holding power.
• Painted floors and smooth concrete can reduce friction.
• Use additional controls where required (parking brake, dock lock, wheel restraint).

4. Inspection Before Use

• Check for cracks, chunking, or excessive wear.
• Confirm traction ribs or surfaces are intact.
• Verify rope/chain is secure and not a trip hazard.
• Remove from service if hardened, deformed, or damaged.

5. Storage & Handling

• Store out of prolonged direct sunlight when possible.
• Keep away from chemicals that degrade rubber or urethane.
• Do not throw chocks — repeated impact can cause internal damage.

6. Common Mistakes to Avoid

• Placing chocks against the tire sidewall instead of the tread.
• Using undersized chocks for large diameter tires.
• Relying only on brakes on sloped surfaces.
• Using makeshift blocks instead of proper chocks.

7. Training & Procedures

• Follow your company’s standard operating procedures.
• Train personnel on correct placement and removal timing.
• Use high-visibility chocks in active traffic or ramp environments.