An elevated train is a type of public transportation system that runs on tracks raised above the ground. These trains are often found in urban areas, where they help reduce traffic congestion by providing a fast and efficient way to travel. Elevated trains can be powered by electricity or other means and typically have stations at various points along their routes. Many cities around the world, such as New York City with its subway system and Chicago with its L train, utilize elevated trains to connect neighborhoods and facilitate commuting. The design of elevated trains allows them to avoid street-level obstacles, making them a popular choice for densely populated areas.