Which group includes emergency stop and manual operation options?

• A. Safety Features
• B. Audio-Visual Alert
• C. Runways
• D. Maintenance

Answer: (A)

Safety features cover the protective devices and controls that prevent injury during operation. An emergency stop is the quickest way to bring the escalator or moving walk to a complete halt the moment something unsafe is detected. Manual operation options let a trained technician take control to move or stop the unit when automatic systems aren’t available or during testing and maintenance. Together, these elements are all about protecting riders and workers, so they belong in the safety features group. Audio-Visual alerts warn people but don’t stop the machine; runways are structural components; maintenance covers service tasks, which may rely on safety controls but aren’t the safety controls themselves.