How should signals between the signalperson and operator be delivered?

• A. Verbal shouting from the crane cab only.
• B. Written notes exchanged after the lift.
• C. Established hand signals or radio, clearly and unambiguously, from a safe location.
• D. Signals are optional.

Answer: (C)

Clear, real-time communication between the signalperson and the operator is essential for safe crane operations. The signalperson should use established hand signals or a radio system, and all signals must be delivered from a safe location where both people can see or hear them and where they are not exposed to hazards. This setup ensures the operator receives unambiguous instructions that can be acted on immediately, reducing the chance of misinterpretation or delays.

Verbal shouting from inside the crane cab isn’t reliable because it relies on crowded or noisy conditions and might not be heard or understood, and signals from within the cab don’t guarantee the signaller remains in a safe spot. Written notes exchanged after the lift are not suitable for coordinating ongoing moves, since delays can create dangerous situations. And signals being optional isn’t acceptable—having a formal, standardized signaling method is a safety requirement to ensure everyone understands the commands and can execute lifts safely.