Australia Model Code of Practice: Managing the Risks of Plant in the Workplace 4.7: 4.7 Place, check and remove wheel chocks safely

Care is needed installing and removing wheel chocks because workers can stand in the line of the wheel if a roll-away occurs. Chocks should be placed centrally and square to the tyre, with a very slight gap between chock and wheel to show whether the vehicle has moved (not appropriate when people work around the vehicle, for example for repair). Check for vehicle movement before removing chocks, never remove a tightly wedged chock by force because it indicates the vehicle has moved and may roll, do not stand in the potential direction of roll while placing or removing chocks, do not try to re-enter a vehicle that has started to roll, and do not try to stop or enter the path of an uncontrolled roll-away.