CHOCKING & BLOCKING
An essential part of a safe working environment is the use
of chocks and blocks when loading or unloading trucks and trailers. Every year, workers are severely or fatally
injured because the wheels of a truck or trailer were not chocked.
Accidents happen when a truck or trailer rolls away from
the dock because no one took the time to chock the wheels.
In some cases, drivers who got out of the cab were crushed
by their own truck. In other cases, forklift drivers were injured when the forklift fell between dock and a
trailer that moved away.
The wheels of trucks or trailers at a dock should always be
chocked prior to the start of any operation.
Forklift drivers should never enter a trailer without first
verifying that the wheels have been chocked, and that the floor of the trailer is in good condition and capable
of supporting the weight of the forklift and its load.
In most states, OSHA requires that vehicle wheels be
chocked prior to permitting forklifts to enter trailers.
Positioning of chocks is important. The purpose of the
chock is to pin the wheels and hold them stationary so that the tractor or trailer can't move. However, if they
aren't placed in the right location they don't always prevent movement of the wheels.
The safest procedure is to always chock the wheels closest
to the dock--especially on a tandem-axle trailer. The reason is the lift truck entering the trailer can exert a
downward force which helps pin the wheels more effectively against the chock.
When the front axle is chocked, the forward motion of a
forklift entering the trailer may loosen the chock, allowing the trailer to move forward, or even jump the
Be sure the correct equipment is always available. Every
loading dock should be equipped with chocks, which if properly used, will keep vehicles from moving while being
loaded or unloaded, especially when forklift trucks are used.
Chocks will more likely be available at all times if they
are fastened to the dock with a chain or rope to prevent their "disappearance." It is a good idea to store them out of traffic areas when not in
HELP AVOID ACCIDENTS…
CHOCKS AND BLOCKS DON’T WORK IF YOU DON’T USE