An operator must obey an audible stop or an emergency stop signal when given by who?

An operator must obey an audible stop or an emergency stop signal when given by who?

• A. Anyone
• B. A supervisor
• C. The signal person
• D. The safety officer

Answer: (A)

In crane operations, the person in charge of signaling—the signal person—controls the lift signals. The operator must obey an audible stop or emergency stop signal from that person because they are trained to use standardized signals and have the best view of the load and ground crew. This direct, authorized signaling ensures immediate, clear communication to halt movement and keep everyone safe. Signals from a supervisor or safety officer aren’t the primary signaling channel for lift movements, and while they can intervene, the official stop command comes from the designated signal person to avoid confusion and delays.

In crane operations, the person in charge of signaling—the signal person—controls the lift signals. The operator must obey an audible stop or emergency stop signal from that person because they are trained to use standardized signals and have the best view of the load and ground crew. This direct, authorized signaling ensures immediate, clear communication to halt movement and keep everyone safe. Signals from a supervisor or safety officer aren’t the primary signaling channel for lift movements, and while they can intervene, the official stop command comes from the designated signal person to avoid confusion and delays.