If communication is disrupted, what must happen?

• A. Everything must stop
• B. Signals must switch to backup channel
• C. Continue with reduced speed
• D. Operator decides

Answer: (A)

When communication is disrupted, stopping all crane movement and securing the load is the only safe course. Clear, reliable signals between the operator and signal personnel guide every lift; without them, there’s a high risk of misinterpretation, unexpected crane motions, or the load dropping. The proper protocol is to halt operations, secure the load in a safe position, and restore a working communication method or establish a verified signaling plan before resuming. Backup channels or procedures may exist, but you don’t resume work on the basis of uncertain signals or operator guesswork.