Which component marks the stop location to stop movement?

Which component marks the stop location to stop movement?

• A. Platform Guard
• B. Emergency Stop Switch
• C. Grab Bar
• D. Retractable Arms

Answer: (B)

The ability to halt movement quickly is provided by the emergency stop switch. When you activate it, power to the drive and control circuits is cut (and any braking the system uses is engaged), causing the escalator or moving walk to stop immediately. This device is specifically designed to deliver a fast, predictable stop at a safe location, whether for an emergency or for maintenance. The other components serve protective or passenger-support roles—like keeping people from falling off the edge, giving riders something to hold, or guiding the mechanism—so they don’t initiate or control the stop of movement.

The ability to halt movement quickly is provided by the emergency stop switch. When you activate it, power to the drive and control circuits is cut (and any braking the system uses is engaged), causing the escalator or moving walk to stop immediately. This device is specifically designed to deliver a fast, predictable stop at a safe location, whether for an emergency or for maintenance. The other components serve protective or passenger-support roles—like keeping people from falling off the edge, giving riders something to hold, or guiding the mechanism—so they don’t initiate or control the stop of movement.