A wheel chock is a wedge-shaped device used to prevent the movement of vehicles, especially when parked on an incline. It is typically made from durable materials like rubber or plastic and is placed against the wheels of a vehicle to keep it stationary. This is particularly important for larger vehicles such as trucks and trailers, which can roll if not properly secured. Using a wheel chock enhances safety by reducing the risk of accidents caused by unintended vehicle movement. They are commonly used in various settings, including construction sites, airports, and garages, ensuring that vehicles remain in place during loading, unloading, or maintenance activities.