Who should direct and interpret crane signals during a lift?

• A. The site supervisor.
• B. Any trained worker on site.
• C. The crane manufacturer technician.
• D. A trained and authorized signal person directs the operator, and the operator follows the signals.

Answer: (D)

Directing and interpreting crane signals is handled by a trained and authorized signal person. This person is responsible for guiding the operator through every movement of the lift, using standardized signals that the operator has been trained to recognize. The operator must follow those signals to ensure controlled, predictable crane operation and to keep people and loads safe. While others on site—such as the supervisor or technicians—play important safety roles, they aren’t designated to issue and interpret crane signals. A worker who isn’t authorized cannot reliably direct the lift, and having a single trained signal person provides clear responsibility and reduces the chance of miscommunication during hoisting.