Plans are in the works to extend two Tokyo Metro subway lines ... Toyocho Station with the hope it would relieve some of the Tozai Line’s congestion. The total estimated construction cost ...

Complex map Tokyo Metro's nine lines — named Ginza, Marunouchi, Hibiya, Tozai, Chiyoda ... Railway's overground routes like the Yamanote Line, whose green trains carry millions in a loop ...