Which person is primarily responsible for providing signals to the crane operator when the load path is not clearly seen?

• A. Operator
• B. Rigger
• C. Signal person
• D. Lift Director

Answer: (C)

When the load path isn’t clearly seen, a designated signal person guides the crane operator. This person is trained to observe the load, the path, and any potential hazards, and to communicate using standard signals or radio as agreed before the lift. They maintain a clear line of sight to both the operator and the load, and they direct movements—start, stop, direction changes, or shifting the path—and can halt the lift if anything becomes unsafe. The operator relies on these signals to move the load safely, rather than making autonomous decisions without visibility.

The rigger’s job is to attach and secure the load, ensuring the rigging is appropriate and safe. The lift director oversees planning and overall coordination of the lift. While they play important roles in safety and planning, the actual, in-the-moment signaling of a lift with poor visibility comes from the designated signal person.