An escalator is a type of moving staircase that is designed to transport people between different floors of a building or structure. It consists of a motor-driven chain of individually linked steps that travel on a pair of tracks. These tracks are positioned in such a way that the steps remain horizontal, providing a comfortable and stable surface for passengers to stand or walk on as they are transported between floors. Escalators are commonly found in places with high foot traffic, such as shopping malls, airports, and train stations, as they can efficiently move large numbers of people vertically. They offer a convenient and time-saving alternative to stairs and are equipped with safety features, such as handrails, sensors, and emergency stop buttons, to ensure the well-being of passengers.