What must a gate system demonstrate regarding obstruction detection to meet safety standards?

• A. The system detects obstructions and stops or reverses as required.
• B. Obstruction detection is optional.
• C. Only audible alarms are required.
• D. The system should ignore obstructions to maintain flow.

Answer: (A)

Obstruction detection paired with a safe response is essential. Automatic gate systems must reliably sense anything in the path and respond by stopping the gate or reversing it to create safe clearance. This isn’t just about warning someone; the action must be taken to prevent injury or damage, meeting the safety standards that govern gate operation. The system typically uses sensors like photoelectric beams, pressure edges, or other detection methods to ensure obstructions are detected under varied conditions. If obstructions are detected, the gate must stop or reverse as required by the safety specifications. That’s why the correct requirement is: the system detects obstructions and stops or reverses as required.