There is a rumor that the Tokyo subway awful lot and it is easy to get confused.
Of course, if you look at the scheme of lines it may seem so, but in reality everything is much easier
Construction of the metro began in 1920 and now it consists of 13 lines. The main feature of the Tokyo subway by comparison with the Novosibirsk and Moscow is that on most of the lines are not used contact rail, but the contact wire on trains. Actually, the train is the train - they begin their movement on the surface away from the center of Tokyo, at the entrances to the tunnels dive, pass under the city, come to the surface with the "other side" and go on. In the photo the contact wire is clearly visible.
"Real" subway line is also available, gauge them is different.
Each line has its own color schemes as well as expressed in the color compositions. These colors are used in multiple nodes direct - colored circle, in the letter lines and station number indicating the distance in meters. Values greater than 800 meters in some places, but due to the large number of indexes, and a huge number of free circuits lines the opportunity to get lost in the Tokyo subway is difficult.
But if you talk about the numerous entrances and exits at the station, there is already quite possible to get lost. Each station has a dozen outlets numbered as A1, A2, C3 ... ... They are built in a variety of building - to get out of the subway to the supermarket it habitual. Sometimes these transitions stretch for hundreds of meters, are placed inside the numerous shopping arcades - shops, catering. By the way, vending machines and kiosks are located not only in the transitions, but also on the platforms themselves, although not as frequently. Tokyo Station is not especially transport facilities, is a small town where you can live without leaving the surface. The integration of the various transport systems in a network, here's what the Japanese succeeded fully. Metro is not perceived as something apart. In addition to the usual inputs, at the station are lifts for the disabled.