What is a wheel chock?

Wheel chocks are devices that are placed under the wheels of a vehicle to prevent it from moving. They are often used in conjunction with other devices, such as jack stands, to secure a vehicle that is being worked on. Wheel chocks are typically made of plastic or rubber, and they come in a variety of sizes to fit different vehicles.

In Australia, wheel chocks are required by law when a vehicle is being worked on. This is to help prevent accidents and injuries, as a vehicle can easily roll away if it is not properly secured.

Wheel chocks should be placed under the wheels on both sides of the vehicle, and they should be tight against the tires. If the vehicle has a manual transmission, the chocks should be placed in front of and behind the rear wheels. For vehicles with an automatic transmission, the chocks should be placed in front of and behind the front wheels.