Which signal lowers the boom while raises the hoist?

• A. The signal for boom down and raise hoist
• B. The signal for lower boom
• C. The signal for move slow
• D. The signal for hoist

Answer: (A)

When two actions must happen at the same time, the signal should specify both movements so the operator executes them together. Lowering the boom while raising the hoist is a dual action, so the correct signal literally communicates “boom down and raise hoist.” This ensures the boom moves down and the hoist moves up in unison, preventing one motion from lagging behind the other and helping control the load safely. Other signals address only one part of the task or a change in speed, which wouldn’t accomplish the simultaneous movement needed here. Quick confirmation with the signaler before acting also helps maintain coordination and safety.