Who can give the emergency stop signal?

• A. Operator
• B. Anyone
• C. Supervisor
• D. Designated signaler

Answer: (B)

In crane operations, the emergency stop is a safety control designed for immediate action by anyone who perceives a hazard. It should be accessible and usable by every worker, because danger can be recognized by any person, not just the operator. When any worker can activate the stop, there’s no delay waiting for a specific role to respond, which reduces the risk of injury or damage. While roles like supervisor or designated signaler exist for coordination and communication, the most reliable safety practice is that stopping the crane must be possible by anyone who sees a danger, ensuring rapid and decisive intervention.