Tokyo Metro is one of two metro systems making up the Tokyo subway system, the other being Toei.

In addition to underground subways, the Tokyo transit system consists of the Toden Arakawa light rail line and the Ueno Zoo Monorail. The Tokyo subway system carries approximately 2.8 billion people per year to 282 subway stations.

Efforts are made to make the system accessible to non-Japanese speaking users. Many train stops are announced in both English and Japanese. Announcements also provide connecting line information.

Ticketing machines can switch between English and Japanese user interfaces. Many stations' railings often have Braille at their base meant for visually challenged commuters.

Image: Two passengers sleep as they travel on the Japan Railways subway train system in Tokyo. | Photograph: Philippe Lopez/AFP/Getty Images.