Chiyoda Line
A Chiyoda Line 16000 series train
Overview
Other name	C
Native name	千代田線
Owner	Tokyo Metro
Line number	9
Locale	Tokyo
Termini	Yoyogi-Uehara Ayase (Main line) /Kita-Ayase (Branch)
Stations	20
Color on map	Green
Service
Type	Heavy railrapid transit
System	Tokyo subway
Operator(s)	Tokyo Metro
Depot(s)	Ayase, Yoyogi
Rolling stock	Tokyo Metro 16000 series Tokyo Metro 05 series (for Kita-Ayase Branch Line) Odakyu 4000 series Odakyu 60000 series MSE JR East E233-2000 series
Daily ridership	1,447,730 (2017)[1]
History
Opened	20 December 1969; 56 years ago (1969-12-20)
Last extension	1979
Technical
Line length	24.0 km (14.9 mi)
Number of tracks	2
Track gauge	1,067 mm (3 ft 6 in)
Minimum radius	160.2 m (526 ft) (Main line) 143.8 m (472 ft) (Branch line)
Electrification	Overhead line, 1,500 V DC
Operating speed	80 km/h (50 mph) (Ayase -Yoyogi-Uehara 60 km/h (37 mph) (Kita-Ayase-Ayase)
Signalling	Cab signalling, Closed block
Train protection system	New CS-ATC,ATO
Maximum incline	3.5%
Route map Legend Odakyū Odawara Line forOdawara C01 Yoyogi-Uehara OHOdakyū Odawara Line Yoyogi-Hachiman OH Odawara Line forShinjuku Yoyogi Depot C02 Yoyogi-koen Harajuku JYYamanote Line C03 Meiji-Jingumae Fukutoshin Line C04 Omotesandō Ginza andHanzōmon lines C05 Nogizaka Toei Ōedo Line C06 Akasaka Ginza and Marunouchi lines Tameike-Sanno Ginza andNamboku lines C07 Kokkai-gijidōmae Marunouchi Line Servicing connection toYūrakuchō Line C08 Kasumigaseki Marunouchi andHibiya lines Marunouchi Line Mita Line C09 Hibiya Yūrakuchō Yamanote andKeihin-Tohoku lines C10 Nijūbashimae Tokyo Marunouchi,Yamanote andKeihin–Tōhoku lines Ōtemachi Tōzai,Mita, C11 Otemachi Marunouchi andHanzōmon lines Awajichō C12 Shin-Ochanomizu Ochanomizu JCChūō Line C13 Yushima Toei Ōedo Line C14 Nezu C15 Sendagi C16 Nishi-Nippori JYJKYamanote andKeihin-Tohoku lines NT Nippori-Toneri Liner C17 Machiya KSKeisei Main Line,Toden Arakawa Line Joban Line/Hibiya Line/Tobu Line for central Tokyo C18 Kita-Senju JJTS JRJoban,Tobu Skytree Line, Tsukuba Express Arakawa River Central Circular Route Ayase River Shuto Expressway Line 6 Misato Route C19 Ayase Ayase Branch Line splits from Joban Line C20 Kita-Ayase Ayase Depot JJJLJoban Rapid and Local Line for Matsudo,Abiko,Toride

TheChiyoda Line (千代田線,Chiyoda-sen) is asubway line owned and operated byTokyo Metro inTokyo, Japan. On average, the line carries 1,447,730 passengers daily (2017), the second highest of the Tokyo Metro network, behind theTozai Line (1,642,378).^[1]

The line was named after theChiyoda ward, under which it passes. On maps, diagrams and signboards, the line is shown using the color green, and its stations are given numbers using the letter "C".

The 24.0 km (14.91 mi) line serves thewards ofAdachi,Arakawa,Bunkyō,Chiyoda,Minato andShibuya, and a short stretch of tunnel inTaitō with no station. Its official name, rarely used, is Line 9 Chiyoda Line (9号線千代田線,kyūgō sen Chiyoda-sen). The Chiyoda Line was built as a bypass for the olderHibiya Line, with both lines following a similar route and having direct interchanges at three stations. Trains havethrough running onto other railway lines on both ends. More than half of these are trains to the northeast beyond Ayase onto theEast Japan Railway Company (JR East)Joban Line toAbiko (Toride during the rush hour). The rest run to the southwest beyond Yoyogi-Uehara onto theOdakyu Odawara Line toIsehara.

Services on the Kita-Ayase branch consist of a combination of shuttle services to Ayase and through services to Yoyogi-Uehara.^[2]

The Chiyoda Line has direct interchanges with all other Tokyo Metro and Toei lines with the exception of theToei Oedo Line. However,Yushima Station is located relatively close toUeno-okachimachi Station on the Oedo Line without being marked as an official transfer between the lines.

According to theTokyo Metropolitan Bureau of Transportation, as of June 2009 the Chiyoda Line was the second most crowded subway line in Tokyo, at its peak running at 181%^[a] capacity betweenMachiya andNishi-Nippori stations.^[3] In 2016 congestion was reported at 178%.^[4] In both fiscal years 2021^[5] & 2022^[6] the congestion rate had dropped to 139%, as a consequence of theCOVID-19 pandemic.

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The Chiyoda Line was originally proposed in 1962 as a route running from “Kitami –Harajuku –Nagatachō –Hibiya –Ikenohata –Nippori –Matsudo” under Urban Transportation Council Report No. 6 (都市交通審議会答申第6号); the initial name was Line 8.^[7]

In a revision issued in January 1964, it was indicated that the section from Nippori to Matsudo would connect to theJōban Line viaNishi-Nippori,Machiya, andKita-Senju, with the Jōban Line extended beyond Ayase. A further revision in March specified that theOdakyū Odawara Line would be extended between Kitami andYoyogi-Uehara to serve the section from Kitami to Harajuku.^[7]

The original proposal envisioned a separate subway line branching from the Odakyu Line at Kitami Station, running beneathSetagaya-dōri and passing throughWakabayashi andKomaba to Harajuku. However, due to issues such as operational conflicts with the Odakyu Line, the current plan was adopted, in which Odakyu services are extended from Kitami and diverge at Yoyogi-Uehara.^[8]

On December 16, 1964, Line 8 was formally designated as Line 9, officially named the Tokyo Metropolitan Rapid Transit Line No. 9, and the 32.5 km section between Kitami and Ayase was finalized. However, until April 1968, the line number differed by authority: it was referred to as Line 8 by the Urban Transportation Council under theMinistry of Construction, while theTokyo Metropolitan Government designated it as Line 9.^[7]

Line 9 was designed to pass through built-up areas inChiyoda, and also intended to relieve the busyGinza Line andHibiya Line, which follow a roughly similar route through central Tokyo.

On July 30, 1966, construction began with work on subsequent sections commencing sequentially thereafter.^[9]

The first stretch was opened on December 20, 1969 betweenKita-Senju andŌtemachi. The line was almost completed by October 10, 1972 when it reachedYoyogi-Kōen, although the 1 km (0.62 mi) section toYoyogi-Uehara was not completed until March 31, 1978.

The branch line toKita-Ayase was opened on December 20, 1979. This branch primarily serves as a connection to Ayase Depot, but also serves Kita-Ayase Station constructed in the area. A three-car shuttle service operated between Ayase and Kita-Ayase.

The Chiyoda Line was one of the lines targeted in theAum sarin gas attack on March 20, 1995.

On May 15, 2006,women-only cars were introduced on early-morning trains fromToride on theJoban Line toYoyogi-Uehara.

On March 18, 2008, the Chiyoda Line became the first subway line in Japan with operations by reserved-seating trains when OdakyuRomancecarlimited express services began running between Kita-Senju andHakone-Yumoto (on theHakone Tozan Line) andKarakida (on theOdakyu Tama Line). Trains also run from/toShin-Kiba using tracks connecting to theYurakucho Line.

On March 16, 2019, 10-car trains commenced operation on the branch line to Kita-Ayase station after platforms were lengthened by 135m, allowing direct services from Kita-Ayase to Yoyogi-Uehara.^[10]

• Distance: 24.0 km (14.91 mi)
• Double-tracking: Entire line
• Railway signalling: NewCS-ATC

Metro Morning Way andMetro Homeway and are fully reserved seat commuter trains operating betweenHon Atsugi on theOdakyuOdawara Line andKita-Senju on the Chiyoda Line using60000 series MSERomancecar trains. These services require a seat reservation as well as payment of theLimited Express fee. Tickets can be purchased online or at ticket vending machines or ticket counters at Odakyu stations.^[11][12] Travel wholly within the Chiyoda Line is not permitted.^[13]

As of July 2024, on weekdays there are 2MetroMorning Way services to Kita-Senju arriving 07:53 & 09:40, and there are 5Metro Homeway services departing Otemachi hourly between 17:30 & 21:30 of which only the 18:30 departure commences from Kita-Senju at 18:14.^[12] On weekends and holidays there is oneMetroMorning Way service to Kita-Senju arriving 09:46^[11][13] and 2Metro Homeway services departing Kita-Senju at 19:35 & 20:35.^[12][13]

Metro Hakone is a similar service operating in the counter-peak direction between Kita-Senju andHakone-Yumoto on theHakone Tozan Line to serve visitors toHakone, with a travel time of approximately 2 hours. On weekdays there is 1 trip in each direction, departing Kita-Senju at 09:47 and arriving back at Kita-Senju at 16:46. On weekends and holidays there are 3 trips in each direction: departing Kita-Senju at 08:33, 10:37 & 15:22, arriving back at Kita-Senju at 12:47, 18:21 & 19:53.^[13]

• All stations are located in Tokyo.
• Stopping patterns:
  • Commuter Semi Express, Local, Semi Express, and Express trains stop at every station.
  • OdakyuRomancecarMetroMorning Way andMetro Homeway limited express services stop at stations marked "●" and does not stop at those marked "｜".

	Station	Japanese	Distance (km)		Limited Express	Transfers	Location
			Between stations	From C-01
↑Through-services to/fromIsehara via theOHOdakyu Odawara Line; limited expressMetro Morning Way/Metro Home Way to/fromHon-Atsugi via theOH Odakyu Odawara Line; limited expressMetro Hakone to/fromHakone-Yumoto via theOHHakone Tozan Line; limited expressMetro Enoshima toKatase-Enoshima via theOEOdakyū Enoshima Line ↑
C01	Yoyogi-Uehara	代々木上原[* 1]	-	0.0	※[* 2]	Odakyu Odawara Line	Shibuya
C02	Yoyogi-koen	代々木公園	1.0	1.0	|	Odakyu Odawara Line (Yoyogi-Hachiman)
C03	Meiji-jingumae (Harajuku)	明治神宮前	1.2	2.2	|	FFukutoshin Line (F-15) JYYamanote Line (Harajuku)
C04	Omotesandō	表参道	0.9	3.1	●	GGinza Line (G-02) ZHanzōmon Line (Z-02)	Minato
C05	Nogizaka	乃木坂	1.4	4.5	|
C06	Akasaka	赤坂	1.1	5.6	|
C07	Kokkai-gijidō-mae	国会議事堂前	0.8	6.4	|	G Ginza Line (Tameike-sanno: G-06) MMarunouchi Line (M-14) NNamboku Line (Tameike-sanno: N-06)	Chiyoda
C08	Kasumigaseki	霞ケ関	0.8	7.2	●	M Marunouchi Line (M-15) HHibiya Line (H-07)
C09	Hibiya	日比谷	0.8	8.0	|	H Hibiya Line (H-08) YYūrakuchōLine (Yūrakuchō: Y-18) IMita Line (I-08) JYYamanote Line (Yūrakuchō) JKKeihin-Tōhoku Line (Yūrakuchō) Underground passage toGinza,Higashi-ginza stations
C10	Nijūbashimae	二重橋前	0.7	8.7	|	MMarunouchi Line (Tokyo: M-17) JEKeiyō Line (Tokyo: JE01)
C11	Ōtemachi	大手町	0.7	9.4	●	M Marunouchi Line (M-18) TTozai Line (T-09) ZHanzōmon Line (Z-08) IMita Line (I-09)
C12	Shin-ochanomizu	新御茶ノ水	1.3	10.7	|	M Marunouchi Line (Awajicho: M-19) SShinjuku Line (Ogawamachi: S-07) JBChūō-Sōbu Line (Ochanomizu) JCChūō Line (Ochanomizu)
C13	Yushima	湯島	1.2	11.9	|	G Ginza Line (Ueno-hirokoji: G-15) H Hibiya Line (Naka-okachimachi: H-17) EŌedo Line (Ueno-okachimachi: E-09) JYYamanote Line (Okachimachi) JKKeihin-Tōhoku Line (Okachimachi)	Bunkyō
C14	Nezu	根津	1.2	13.1	|
C15	Sendagi	千駄木	1.0	14.1	|
C16	Nishi-Nippori	西日暮里	0.9	15.0	|	JYYamanote Line JKKeihin-Tōhoku Line NTNippori-Toneri Liner (02)	Arakawa
C17	Machiya	町屋	1.7	16.7	|	KSKeisei Main Line Toden Arakawa Line (Machiya-ekimae)
C18	Kita-Senju	北千住[* 3][* 4]	2.6	19.3	●	H Hibiya Line (H-22) JJJōban Line (Rapid) TSTobu Skytree Line Tsukuba Express (05)	Adachi
C19	Ayase	綾瀬[* 3]	2.6	21.9		JLJōban Line (Local) C Chiyoda Line (forKita-ayase)
↓Through-services to/fromKashiwa,Abiko andToride via theJLJoban Line (Local) ↓
C20	Kita-Ayase	北綾瀬	2.1	24.0			Adachi

As of 1 January 2019^[update], the following train types are used on the line, all running as ten-car formations unless otherwise indicated.^[14]

• 16000 series (x37) (since November 2010)^[15]
• 05 series 3-car trains (x4) (since April 2014, used on Kita-Ayase Branch)^[16]

• 
  16000 series 10-car set in September 2011
• 
  05 series 3-car set in March 2014

• 4000 series (since September 2007)^[17]
• 60000 series MSE (since spring 2008, used onMetro Morning Way,Metro Homeway & Metro Hakone services)^[18]

• 
  An Odakyu 4000 series set in April 2016
• 
  An Odakyu 60000 series MSERomancecar EMU on aMetro Hakone service in April 2012

• E233-2000 series (x19) (since summer 2009)

• 
  A Jōban Line/Tokyo Metro Chiyoda Line E233-2000 series set in April 2019

• 6000 series (x35) (from 1971 until November 2018)
• JNR 103-1000 series (x16) (from 1971 until April 1986)
• JR East 203 series (x17) (from August 27, 1982 until September 26, 2011)^[19]
• JR East 209-1000 series (x2) (from 1999 until October 13, 2018)
• JNR 207–900 series (x1) (from 1986 until December 2009)
• 5000 series 3-car trains (x2) (from 1969 until 2014, later used on branch line)
• 6000 series 3-car train (x1) (prototype of the series built in 1968 until 2014, used on branch line)
• 06 series (x1) (from 1993 until January 2015)^[20]
• 07 series (x1) (September 2008 – December 2008)
• Odakyu 1000 series (1988–2010)
• Odakyu 9000 series (1978–1990)

• 
  5000 series (Aluminum prototype)
• 
  A Tokyo Metro 6000 series set in December 2014
• 
  An 07 series set in December 2008
• 
  An Odakyu 9000 series set in October 1977

Wikimedia Commons has media related toTokyo Metro Chiyoda Line.

• Tokyo Metro website

• Tokyo Metro Chiyoda Line
• Lines of Tokyo Metro
• Railway lines in Tokyo
• Railway lines opened in 1969
• 1067 mm gauge railways in Japan
• 1500 V DC railway electrification

• CS1 Japanese-language sources (ja)
• CS1 uses Japanese-language script (ja)
• Articles with short description
• Short description is different from Wikidata
• Use mdy dates from November 2021
• Articles containing Japanese-language text
• Articles needing additional references from July 2014
• All articles needing additional references
• Articles containing potentially dated statements from January 2019
• All articles containing potentially dated statements
• Commons category link from Wikidata