Overground trains are a type of rail transport that operates on tracks above ground level. They are commonly used in urban areas to connect different neighborhoods and suburbs to city centers. These trains are often part of a larger public transportation system, providing a convenient and efficient way for people to travel. Unlike underground trains, which run below the surface, overground trains offer passengers views of the surrounding landscape. They can be powered by electricity or diesel and typically have multiple carriages to accommodate many passengers. Overground trains are an essential part of the transportation network in cities like London and Tokyo.