Which term describes the floor area limit used for safety?

• A. Floor Area Limit
• B. Non-boarding Arm Lock
• C. Pitch Diameter
• D. Hydraulic Driving Machines

Answer: (A)

The floor area limit is the safety boundary around an escalator or moving walk that must be kept clear to ensure safe operation. This limit defines the required space on the floor so riders, maintenance personnel, and nearby equipment don’t crowd into the moving area, reducing the risk of trips, entrapment, or interference with operating safety devices. Keeping within this boundary ensures there’s room for the unit to stop safely, for cleaning or servicing, and for people to move away from the moving steps or belts.

The other terms refer to different concepts: a non-boarding arm lock is a safety device to prevent boarding under certain conditions, pitch diameter is a measurement related to gears, and hydraulic driving machines describe a type of drive system. None describe the defined safety boundary around the equipment like floor area limit does.