An escalator is a moving staircase that transports people between different floors of a building. It consists of a continuous loop of steps that move up or down, powered by an electric motor. Escalators are commonly found in places like shopping malls, airports, and subway stations, making it easier for people to navigate between levels without using stairs. Escalators are designed with safety features, such as handrails that move at the same speed as the steps and emergency stop buttons. They are an efficient way to move large numbers of people quickly, especially in busy public spaces where elevators may be less practical.