Prevent trucks from pulling away from a loading dock too early by tying trailer restraint and the dock signals into one locked sequence. When a trailer backs in, chock its rear wheels and engage a vehicle restraint on the rear impact guard where one is fitted, then show red to the driver and green to the dock crew only once restraint is confirmed. Release runs in reverse once the forklift has left the trailer. Interlocks can stop the dock door or leveler from operating until the restraint is engaged. OSHA 1910.178(k)(1) requires the truck's brakes set and wheel chocks placed before forklifts board it.
The full guide is loading dock forklift safety. Early departure and trailer creep both open a gap at the dock edge, and a forklift entering or leaving the trailer at that moment can fall. Signal lights only work if drivers know the convention, so put the rule in carrier instructions and post it at the gate. Make restraint or chock status visible inside the building, and log releases so mistakes can be traced. Meeting 1910.178(k) is the employer’s duty; check the standard text rather than relying on equipment claims. Detection at the dock adds a layer for people on the dock face; shipping and receiving pedestrian safety covers dock walkers.