Which of the following is a site hazard related to access doors that can move and stop?

• A. Overhead services
• B. Bridges
• C. Ground conditions
• D. Roller doors

Answer: (D)

When a site hazard involves an access door that can move and stop, the key risk is crush or entrapment from the moving parts. Doors that open and close, like roller doors, can close unexpectedly or stop at any point, creating a zone where a person or a forklift operator can be caught between the door and the frame, or be struck if the door resumes moving. This makes roller doors a classic example of a moving-access-door hazard: they introduce a moving mechanical element into pedestrian and vehicle pathways that can injure if not properly controlled, locked out, or guarded.

In practical terms, when using a forklift near a roller door, you must ensure the door is clearly controlled, kept clear of people, and that the area is safe before passing through. Regular maintenance and safety features (like edges or auto-reverse) help reduce the risk, but the fundamental hazard is the door’s ability to move and stop, creating crush points.

Overhead services, bridges, and ground conditions are separate hazards and do not describe the risk specifically tied to a moving access door, which is why roller doors best fit this scenario.