"STOP! don't move the car ... there is a wheel chock under it!"

A chock left under a wheel can cause a derailment if the switching crew doesn't notice that the car is still chocked. Make your wheel chocks more visible at night and in dim light. A flashing blue light warns workers that a chock is still in place and that the car should not be moved without authorization.

Battery powered blue flashing light mounts in steel bracket bolted to wheel chock handle. Lens is also available in amber, red, or clear.