Urban Railway System, also known as METRO, is a type of public transportation system that operates in urban areas. It typically consists of a network of tracks and stations, with electric or diesel powered trains running on the tracks. METRO systems are usually operated by a government agency or a private company, and provide an efficient way for people to travel within cities. METRO systems are often used in conjunction with other forms of public transport, such as buses and trams, to provide a comprehensive transportation network.