Toei Shinjuku Line

• 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 . 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, the Tokyo Metro Fukutoshin Line and the Tokyo Metro Tozai Line are the only other subway lines to run beyond Tokyo, with the shared northern terminus of the first two at Wakōshi Station in Saitama Prefecture, and the eastern terminus of the Tozai Line being at Nishi-Funabashi Station in Chiba Prefecture. However, all lines that have through services contain at least one route beyond Tokyo. ==History==

In April 1968, the Urban Transportation Council proposed Line 10 as a route running from Roka-koen via Shinjuku and Yasukuni-dōri, passing through Ichigaya, Jimbochō, Sudachō, and Hamachō, and terminating at Sumiyoshichō. Following this recommendation, the Ministry of Construction issued Notice No. 3731 on December 28 of the same year, formally approving the construction of the Shinjuku–Sumiyoshichō section (12.5 km) as Line 10, officially designated the Tokyo Metropolitan Rapid Transit Line No. 10. On 1 May 1971, construction began near Morishita and Sumiyoshi. Timeline • 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. ==Stations==

• 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. Express trains only run during peak hours; westbound in the mornings and eastbound in the evenings. • 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 10-car EMUs. Until 11 August 2022, the line was also served by 8-car trains. Current • Toei 10-300 series • Keio 5000 series • Keio 9000 series File:Toei Subway 10-300 series 20161201.jpg|Toei 10-300 series EMU File:Keio 9000 series 9742F 20190701.jpg|Keio 9000 series EMU File:Keio 5731 Funabori 20190611.jpg|Keio 5000 series EMU Former • Toei 10-300R series (until 2017) • Toei 10-000 series (until 2018) • Keio 6000 series (until 2011) == Notes ==