Escalator
![Escalators in a Copenhagen Metro station, Denmark, June 2007](/Images/godic/202501/28/Copenhagen_Metro_escalators0454.jpg")
![Escalator in action, 2011](/Images/godic/202501/28/-Escalator.ogv0454.jpg")
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![](/Images/godic/202501/28/Shanghai_Museum_escalators0454.JPG")
An escalator is a moving staircase – a conveyor transport device for carrying people between floors of a building. The device consists of a motor-driven chain of individually linked steps that move up or down on tracks, allowing the step treads to remain horizontal.