Tokyo Metro

Company History: Tokyo Metro Co., Ltd. (東京メトロ Tōkyō Metoro), commonly known as Tokyo Metro, is a rapid transit system in Tokyo, Japan. While it is not the only rapid transit system operating in Tokyo, it has the higher ridership among the two operators: in 2014, the Tokyo Metro had an average daily ridership of 6.84 million passengers, while the other system, the Toei Subway, had 2.85 million average daily rides. The company replaced the Teito Rapid Transit Authority (帝都高速度交通営団 Teito Kōsokudo Kōtsū Eidan), commonly known as Eidan or TRTA, on April 1, 2004. Read more on Wikipedia.