R 408.11863 Signals.

Rule 1863. An operator shall respond to signals only from the employee directing a lift. However, he shall obey at all times an emergency stop signal from any employee. The signals given an operator shall conform to Table 1. When 2 or more cranes are used to lift a load, a designated employee shall give all signals. STANDARD HAND SIGNALS FOR CONTROLLING OVERHEAD AND GANTRY CRANES Table 1 HOIST. With forearm vertical, forefinger pointing up, move hand in small horizontal circle. LOWER. With arm extended downward, forefinger pointing down, move hand in small horizontal circles. BRIDGE TRAVEL. Arm extended forward, hand open and slightly raised, make pushing motion in direction of travel. TROLLEY TRAVEL. Palm up, fingers closed, thumb pointing in direction of motion, jerk hand horizontally. STOP. Arm extended, palm down, hold position rigidly. EMERGENCY STOP. Arm extended, palm down, move hand rapidly right and left. MULTIPLE TROLLEYS. Hold up one finger for block marked “1” and two fingers for block marked “2”, Regular signals follow. MOVE SLOWLY. Use one hand to give any motion signal and place other hand motionless in front of hand giving the motion signal. (Hoist slowly shown as MAGNET IS DISCONNECTED. Crane operator spreads both hands apart – palms up. STANDARD HAND SIGNALS FOR CONTROLLING OVERHEAD AND GANTRY CRANES Table 1 example.)