Tokyo Metro Marunouchi Line

Tokyo Metro Marunouchi Line
Marunouchi Line 2000 series trains at Yotsuya Station
Overview
Other name(s)	Line 4 / M (Main line) / Mb (Branch line)
Native name	東京メトロ丸ノ内線
Owner	Tokyo Metro
Line number	4
Locale	Tokyo
Termini	Ogikubo (Main) / Honancho (Branch) Ikebukuro (Main) / Nakano-sakaue (Branch)
Stations	28 (including branch line)
Color on map	Red (#F62E36)
Service
Type	Rapid transit
System	Tokyo subway
Depot(s)	Koishikawa, Nakano
Rolling stock	2000 series
Daily ridership	1,159,898 (2017)[1]
History
Opened	20 January 1954; 70 years ago (1954-01-20)
Technical
Line length	27.4 km (17.0 mi) (Main line) 3.2 km (2.0 mi) (Branch Line)
Number of tracks	Double-track
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Minimum radius	140 m (460 ft) (Main line: Near Ginza) 125 m (410 ft) (Branch Line)
Electrification	600 V DC (third rail)
Operating speed	75 km/h (47 mph) (Main line) 65 km/h (40 mph) (Branch line)
Signalling	Tokyo Metro CS-ATC
Maximum incline	3.5%
Route map Legend 0.0 – M-01 Ogikubo Chūō Main, Chūō-Sōbu lines 1.5 – M-02 Minami-Asagaya 2.7 – M-03 Shin-Kōenji 3.6 – M-04 Higashi-Kōenji 4.6 – M-05 Shin-Nakano – 0.0 Mb-03 Hōnanchō Nakano Depot – 1.3 Mb-04 Nakano-fujimichō – 1.9 Mb-05 Nakano-shimbashi 5.7 3.2 M-06 Nakano-sakaue 6.8 M-07 Nishi-Shinjuku Keiō Line Odakyu Odawara Line Chūō-Sōbu Line Yamanote Line Chūō Main Line Saikyō, Shōnan Shinjuku lines 7.6 M-08 Shinjuku Seibu Shinjuku of Seibu Shinjuku Line 7.9 M-09 Shinjuku-sanchōme 8.6 M-10 Shinjuku-gyoenmae 9.5 M-11 Yotsuya-sanchōme 10.5 M-12 Yotsuya 11.8 M-13 Akasaka-mitsuke 12.7 M-14 Kokkai-gijidōmae 13.4 M-15 Kasumigaseki Yamanote, Keihin Tōhoku, Tōkaidō, Sōbu lines Shinkansen 14.4 M-16 Ginza Keiyō Line Tōkaidō Shinkansen Tōhoku, Jōetsu, Nagano Shinkansen Tōkaidō Main Line Keihin-Tōhoku Line Yamamanote Line Sōbu Line (Rapid) Chūō Main Line 15.5 M-17 Tokyo 16.1 M-18 Ōtemachi 17.0 M-19 Awajichō Kanda River 17.8 M-20 Ochanomizu 18.6 M-21 Hongō-Sanchōme 19.4 M-22 Kōrakuen Koishikawa Depot 21.2 M-23 Myōgadani 22.4 M-24 Shin-Ōtsuka Seibu Ikebukuro Line Saikyō, Shōnan Shinjuku lines 24.2 M-25 Ikebukuro Yamanote Line Tōbu Tōjō Line

The Tokyo Metro Marunouchi Line (東京メトロ丸ノ内線, Tōkyō Metoro Marunouchi-sen) is a subway line in Tokyo, Japan, operated by Tokyo Metro. The line runs in a U-shape between Ogikubo Station in Suginami and Ikebukuro Station in Toshima, with a branch line between Nakano-Sakaue Station and Hōnanchō Station. The official name is Line 4 Marunouchi Line (4号線丸ノ内線, Yon-gōsen Marunouchi-sen).

The line was named after the Marunouchi business district in Chiyoda, Tokyo, under which it passes. On maps, diagrams and signboards, the line is shown using the color red, and its stations are given numbers using the letters "M" for the main line and "Mb" for the branch line.