How are exclusion zones around crane operations typically marked, and who may access?

• A. Painted lines on the ground with no access control
• B. Unrestricted access for all workers
• C. Marked with barriers, cones, or tape; restricted access to authorized personnel only
• D. A tall fence with a locked gate and no signage

Answer: (C)

Exclusion zones are built around crane work with a clear, visible boundary and controlled entry. The area is marked using physical barriers, cones, or tape to create a conspicuous danger zone where loads could swing, drop, or travel. Only authorized personnel who have been trained for crane operations—such as the operator, signal person, and rigging crew—are allowed inside the zone. This combination of a visible boundary and restricted access helps prevent unqualified workers from entering a hazardous area and reduces the risk of injury or interference with the lifting operation.

Painted lines alone don’t physically prevent entry and can be ignored or misread. Unrestricted access would expose any worker to crane-related hazards, and a tall fence with a locked gate but no clear signage doesn’t communicate the danger or ensure that entry is properly controlled.