When the motion of a traveling crane is to be slowly made, you should signal by which gesture?

• A. holding the palm of your hand up with your fingers closed, pointing your thumb in the direction of motion, and jerking your hand horizontally
• B. extending your arm forward with your hand open and slightly raised, and making a pushing motion in the direction of travel
• C. using one hand to give the motion signal and holding the other hand motionless in front of the hand giving the motion signal
• D. holding both arms extended with the palms of your hands down, and moving both arms back and forth horizontally

Answer: (C)

This item tests signaling conventions for a traveling crane and how to convey slow travel to the operator. To indicate slow motion, use one hand to signal the direction of travel while the other hand stays motionless in front of the signaling hand. The stationary hand provides a clear reference that the movement should be slow, preventing misinterpretation as a quick or abrupt motion. This two-handed cue is stable and readable at a distance in busy work areas.

Other gestures either imply speed or lack a clear speed instruction: a rapid, jerking motion can be read as urgent or fast; a forward pushing motion is more like a general go-ahead; and moving both arms back and forth doesn’t specifically communicate slow travel.