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Namboku Line
A Namboku Line9000 series train
Overview
Other name	N
Native name	南北線
Owner	Tokyo Metro
Line number	7
Locale	Tokyo
Termini	Meguro Akabane-Iwabuchi
Stations	19
Color on map	Emerald
Service
System	Tokyo subway
Operator(s)	Tokyo Metro
Depot(s)	Ōji
Rolling stock	Tokyo Metro 9000 series Saitama Rapid Railway 2000 series Tokyu 3000 series Tokyu 5080 series Tokyu 3020 series Sotetsu 21000 series
Daily ridership	522,736 (2017)[1]
History
Opened	29 November 1991; 34 years ago (1991-11-29)
Last extension	2000
Technical
Line length	21.3 km (13.2 mi)
Number of tracks	2
Track gauge	1,067 mm (3 ft 6 in)
Minimum radius	160.351 m (526.09 ft)
Electrification	Overhead line, 1,500 V DC
Operating speed	80 km/h (50 mph)
Train protection system	New CS-ATC,ATO
Maximum incline	3.5%
Route map Legend MG Through-running ontoTōkyūMeguro Line N01 Meguro JYYamanote Line Yamanote Line N02 Shirokanedai N03 Shirokane-takanawa IMita Line Mita Line N04 Azabu-juban E Ōedo Line N05 Roppongi-itchōme N06 Tameike-Sannō GGinza Line Kokkai-gijidōmae CM Chiyoda and Marunouchi lines YūrakuchōLine Akasaka-mitsuke MG Marunouchi and Ginza lines N07 Nagatachō YZ Yūrakuchō and Hanzōmon lines Chūō Main Line N08 Yotsuya MJCJB Marunouchi,Chūō (Rapid) andChūō–Sōbu lines Marunouchi Line Shinjuku Line N09 Ichigaya YSJB Yūrakuchō,Shinjuku andChūō–Sōbu lines Shinjuku Line Ōedo Line N10 Iidabashi YTEJB Yūrakuchō,Tōzai,Ōedo andChūō–Sōbu lines Tozai Line Mita Line │YūrakuchōLine N11 Korakuen MMarunouchi Line Kasuga EIŌedo andMita lines Mita Line N12 Todaimae N13 Hon-komagome N14 Komagome JYYamanote Line N15 Nishigahara N16 Ōji JKKeihin–Tōhoku andToden Arakawa lines N17 Ōji-kamiya N18 Shimo N19 Akabane-iwabuchi SR Through-running ontoSaitama Railway Line

TheNamboku Line (南北線,Nanboku-sen; South-North Line) is a subway line owned and operated byTokyo Metro inTokyo, Japan. The line runs betweenMeguro inShinagawa andAkabane-Iwabuchi inKita. The Namboku Line was referred to as Line 7 during the planning stages, thus the seldom-used official name is Line 7 Namboku Line (7号線南北線,Nana-gō-sen Nanboku-sen).

On maps, diagrams and signboards, the line is shown using the color emerald (previously coded "teal"), and its stations are given numbers using the letter "N".

The 21.3 km (13.2 mi) Namboku Line is one of Tokyo Metro's newer lines, featuring advanced technology including fullautomatic train operation andplatform screen doors.

Trainsrun through onto theTokyu Meguro Line forHiyoshi and the Saitama Railway'sSaitama Rapid Railway Line (which is essentially a separately-owned extension of the Namboku Line) forUrawa-Misono.

The right-of-way and stations betweenShirokane-Takanawa and Meguro are shared with theToei Mita Line – a unique situation on the Tokyo subway where both operators share common infrastructure. Under an agreement between Tokyo Metro and theTokyo Metropolitan Government, the fare for this section is calculated on theToei Subway fare system for passengers traveling to stations on the Mita Line past Shirokane-Takanawa, on the Metro fare system for passengers traveling to stations on the Namboku Line past Shirokane-Takanawa, and on the system "most beneficial to the passenger" (presently the Metro schedule) for travel solely on the shared sector.

On maps, diagrams and signboards, the Namboku Line is shown using the color emerald (▉), and its stations are given numbers using the letter "N".

Although the line was originally approved in 1962 as Line 7 (Meguro –Iikurakatamachi –Nagatacho –Ichigaya –Komagome –Oji –Akabanecho), construction did not begin until 1986, partly due to the right-of-way to Meguro with theToei Mita Line.

The first segment fromKomagome toAkabane-Iwabuchi opened on 29 November 1991.

The line initially operated with four-car EMUs. Upon its extension toYotsuya in March 1996, the formations were extended to six cars. On 1 April 2022, eight-car trains began operating on the line.^[2]

The extension toTameike-Sannō was completed in September 1997, and the last stretch from Tameike-Sanno to Meguro was completed on 26 September 2000, when through service to theTokyu Meguro Line started.^[3] Through service with theSaitama Rapid Railway Line commenced when it opened in March 2001 and accommodated traffic to and fromSaitama Stadium during the2002 World Cup. Although the Saitama Line is more or less a northern extension of the Namboku Line, it nevertheless remains a private entity to which the Namboku Line offers through services with.

The Namboku Line was inherited byTokyo Metro after the privatization of the Teito Rapid Transit Authority (TRTA) in 2004.^[4]

Effective the timetable revision on 18 March 2023, through services onto theSagami Railway commenced courtesy of theTokyu andSotetsu Shin-Yokohama Line.^[5] Most southbound services past Hiyoshi continue as far south asShin-Yokohama andEbina.

• All stations are located in Tokyo.
• All services stop at all stations.

Station No.	Station	Japanese	Distance (km)		Transfers	Location
			Between stations	From N-01
↑Through-running to/from ↑ MGMeguro Line forHiyoshi SHTōkyū Shin-Yokohama Line forShin-Yokohama Sōtetsu Main Line forEbina Sōtetsu Izumino Line forShōnandai (viaFutamata-gawa on the Sōtetsu Main Line)
N01	Meguro	目黒[* 1]	–	0.0	MGMeguro Line IMita Line (I-01) (shared) JYYamanote Line	Shinagawa
N02	Shirokanedai	白金台[* 2]	1.3	1.3	I Mita Line (I-02) (shared)	Minato
N03	Shirokane-takanawa	白金高輪[* 2]	1.0	2.3	I Mita Line (I-03) (shared)
N04	Azabu-juban	麻布十番	1.3	3.6	EŌedo Line (E-22)
N05	Roppongi-itchome	六本木一丁目	1.2	4.8	HHibiya Line (Roppongi: H-04)
N06	Tameike-sanno	溜池山王	0.9	5.7	GGinza Line (G-06) MMarunouchi Line (Kokkai-gijidomae: M-14) CChiyoda Line (Kokkai-gijidomae: C-07)	Chiyoda
N07	Nagatacho	永田町	0.9	6.6	YYūrakuchōLine (Y-16) ZHanzōmon Line (Z-04) G Ginza Line atAkasaka-mitsuke (G-05) M Marunouchi Line at Akasaka-mitsuke (M-13)
N08	Yotsuya	四ツ谷	1.3	7.9	M Marunouchi Line (M-12) JCChūō Line (Rapid) JBChūō-Sōbu Line	Shinjuku
N09	Ichigaya	市ケ谷	1.0	8.9	Y Yūrakuchō Line (Y-14) SShinjuku Line (S-04) JBChūō-Sōbu Line
N10	Iidabashi	飯田橋	1.1	10.0	TTozai Line (T-06) Y Yūrakuchō Line (Y-13) E Ōedo Line (E-06) JBChūō-Sōbu Line
N11	Korakuen	後楽園	1.4	11.4	M Marunouchi Line (M-22) I Mita Line (Kasuga: I-12) E Ōedo Line (Kasuga: E-07)	Bunkyō
N12	Todaimae	東大前	1.3	12.7
N13	Hon-komagome	本駒込	0.9	13.6
N14	Komagome	駒込	1.4	15.0	JYYamanote Line	Toshima
N15	Nishigahara	西ケ原	1.4	16.4		Kita
N16	Oji	王子	1.0	17.4	JKKeihin-Tōhoku Line Toden Arakawa Line (Oji-ekimae)
N17	Oji-kamiya	王子神谷	1.2	18.6
N18	Shimo	志茂	1.6	20.2
N19SR19	Akabane-iwabuchi	赤羽岩淵[* 3]	1.1	21.3	SRSaitama Railway Line
↓Through-running to/from↓ SR Saitama Rapid Railway Line forUrawa-Misono

• Tokyo Metro 9000 series 6/8-car EMUs
• Tokyu 3000 series 8-car EMUs
• Tokyu 5080 series 8-car EMUs
• Tokyu 3020 series 8-car^[2] EMUs
• Saitama Rapid Railway 2000 series 6-car EMUs
• Sotetsu 21000 series 8-car EMUs

• 
  Tokyo Metro 9000 series
• 
  Saitama Rapid Railway 2000 series
• 
  Tokyu 3000 series
• 
  Tokyu 5080 series
• 
  Tokyu 3020 series
• 
  Sotetsu 21000 series

On 28 January 2022,Tokyo Metro announced that a 2.5 km (1.6 mi) spur line fromShirokane-takanawa toShinagawa would be built.^[6] The extension is expected to cost¥131 billion (2021) (equivalent to¥142.46 billion or US$941.14 million in 2024)^[7] and scheduled to begin revenue service in the mid-2030s. It is intended to increase connections to and from theChūō Shinkansen, which is scheduled to open for service as early as 2035.

Wikimedia Commons has media related toTokyo Metro Namboku Line.

• Namboku Line Official Website

• Tokyo Metro Namboku Line
• Lines of Tokyo Metro
• Railway lines in Tokyo
• Railway lines opened in 1991
• 1067 mm gauge railways in Japan
• 1991 establishments in Japan

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• CS1 Japanese-language sources (ja)
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