Toei Shinjuku Line

The Toei Shinjuku Line (都営地下鉄新宿線) is a rapid transit line in Tokyo and Chiba Prefecture, Japan, operated by Tokyo Metropolitan Bureau of Transportation (Toei). The line runs between Motoyawata Station in Ichikawa, Chiba in the east and Shinjuku Station in the west. At Shinjuku, most trains continue as through services to Sasazuka Station on the Keiō New Line, with some services continuing to Hashimoto Station in Sagamihara, Kanagawa via the Keiō Line and the Keiō Sagamihara Line.

On maps and signboards, the line is shown in the color leaf green. Stations carry the letter "S" followed by a two-digit number inside a yellow-green chartreuse circle.

Basic data

 * Double-tracking: Entire line
 * Railway signalling: D-ATC

Overview
Unlike all other Tokyo subway lines, which were built to or  gauges, the Shinjuku line was built with a track gauge of  to allow through operations onto the Keiō network. The line was planned as Line 10 according to reports of a committee of the former Ministry of Transportation; thus the rarely used official name of the line is the "Number 10 Shinjuku Line" (10号線新宿線).

According to the Tokyo Metropolitan Bureau of Transportation, as of June 2009 the Shinjuku Line was the third most crowded subway line in Tokyo, at its peak running at 181% capacity between Nishi-ōjima and Sumiyoshi stations.

It is the only Toei line to run outside Tokyo, and one of only two Tokyo subway lines to run into Chiba Prefecture, the other being the Tokyo Metro Tozai Line. The Tokyo Metro Yūrakuchō Line and the Tokyo Metro Fukutoshin Line are the only other subway lines to run beyond Tokyo, with their shared northern terminus at Wakōshi Station in Saitama Prefecture. All lines that have through services contain at least one route beyond Tokyo, however.

Station list

 * Express trains stop at stations marked with a circle (●), while local trains make all stops.
 * Express trains run between Motoyawata Station and Hashimoto Station on the Keiō Sagamihara Line via the Keio Main Line and Keio New Line.
 * On weekends and holidays, two trains run through to Takaosanguchi Station on the Keiō Takao Line and one runs through to Tama-Dōbutsukōen Station on the Keiō Dōbutsuen Line.

Rolling stock
The Toei Shinjuku Line is served by the following types of 8-car and 10-car EMUs.

Current

 * Toei 10-300 series
 * Keio 5000 series
 * Keio 9000 series

Former

 * Toei 10-300R series (until 2017)
 * Toei 10-000 series (until 2018)
 * Keio 6000 series (until 2011)

History

 * 21 December 1978: Iwamotochō – Higashi-ōjima section opens.
 * 16 March 1980: Shinjuku – Iwamotochō section opens; through service onto Keiō lines begins.
 * 23 December 1983: Higashi-ōjima – Funabori section opens.
 * 14 September 1986: Funabori – Shinozaki section opens.
 * 19 March 1989: Shinozaki – Motoyawata section opens, entire line completed.