Improve the safety of overhead crane equipment at your facility by the LED floor marking. The sign projected on the ground by an LED projector is automatically on when the crane equipment is turned on and running. A projected sign warns of a motion and indicates a position of the hook/load to personnel and other motorized traffic near the crane. The improved level of crane safety allows the operator to focus more on lifting a burden, which leads to the higher efficiency of the process itself and reduces the operator’s errors.