{{Short description|Subway line in Japan}} {{More citations needed|date=March 2010}} {{Infobox rail line | box_width = | name = Tōzai Line | other_name = Line 5 | linenumber = {{color|#{{rcr|Tokyo Metro|T}}|'''T'''}} | native_name = 東西線 | native_name_lang = ja | color = {{rcr|Tokyo Metro|T}} | mapcolor = {{rcb|Tokyo Metro|T|box}} Sky blue | logo = Logo of Tokyo Metro Tōzai Line.svg | logo_width = | image = Tokyo-Metro Series15000-15013.jpg | image_width = | caption = A Tōzai Line 15000 series train | system = Tokyo subway (Tokyo Metro) | status = In service | locale = Tokyo, Chiba prefectures | start = {{ltl|Tokyo Metro|T|l}} | end = {{ltl|Tokyo Metro|T|r}} | stations = 23 | routes = | daily_ridership = 1,499,589 (2024)<ref name="train media">[https://www.train-media.net/report/2510/metro.pdf Tokyo Metro station ridership in 2024] ''Train Media (sourced from Tokyo Metro)'' Retrieved 26 December 2025.</ref> | open = {{start date and age|1964|12|23|df=y}} | lastextension = 1969 | close = | owner = Tokyo Metro Co., Ltd. | operator = Tokyo Metro Co., Ltd. | character = | depot = Fukagawa, Gyōtoku | stock = Tokyo Metro 05/05N series<br> Tokyo Metro 07 series<br /> Tokyo Metro 15000 series<br />Tōyō Rapid 2000 series<br /> JR East E231-800 series | linelength = {{cvt|30.8|km|mi|abbr=on}} | tracklength = | tracks = 2 | gauge = {{RailGauge|1067mm|lk=on}} | electrification = {{1,500 V DC|conductor=overhead}} | speed = {{cvt|100|km/h|mph|abbr=on}} | minradius = {{cvt|200|m|ft}} | trainprotection = New CS-ATC | maxincline = 4.0% | elevation = | map = {{Tozai Line (Tokyo Metro)|inline=yes}} | map_state = collapsed }} [[File:Tokyo Metro Tozai Line train pulling into Waseda Station 2015 3 25.webm|thumb|Tokyo Metro Tōzai Line train pulling into Waseda Station in 2015]] The {{Nihongo|'''Tōzai Line'''|東西線|Tōzai-sen|{{lit|East-West Line}}}} is a rapid transit line in Tokyo and Chiba Prefecture, Japan, owned and operated by Tokyo Metro. The line runs between Nakano in Nakano-ku, Tokyo and Nishi-Funabashi in Funabashi, Chiba Prefecture.

The Tōzai Line was referred to as Line 5 during the planning stages; the seldom-used official name is {{Nihongo|Line 5 Tōzai Line|5号線東西線|Go-gō-sen Tōzai-sen}}.

In 2024, the line carried a daily average of nearly 1.5 million passengers, making it the busiest line on the Tokyo subway network. On maps, diagrams and signboards, the Tōzai Line is shown using the color "sky blue" and its stations are given numbers using the letter "T".

==Overview== The line runs through central Tokyo from east to west via Takadanobaba, Waseda, Ōtemachi, Nihombashi, Kiba and Urayasu. It was opened as a bypass route for the Chuo Rapid Line and the Sobu Line, which were heavily congested at the time. It is the only Tokyo Metro line to extend into Chiba Prefecture (although the Shinjuku Line operated by Toei also extends into Chiba Prefecture.) It also runs above-ground for {{Convert|14|km|abbr=on}} from {{stl|Tokyo Metro|Minami-Sunamachi}} to {{stl|Tokyo Metro|Nishi-Funabashi}}, nearly half of the line and longer than any other railway line in the Tokyo subway network.

The Tōzai Line features through services at both ends of the line. Trains run onto the JR East Chūō-Sōbu Line for {{stl|Tokyo Metro|Mitaka}} at the western (Nakano) end, and onto either the Chūō-Sōbu Line for {{stl|JR East|Tsudanuma}} or the Tōyō Rapid Railway Line for {{stl|Toyo|Tōyō-Katsutadai}} at the eastern (Nishi-Funabashi) end.

According to the Tokyo Metropolitan Bureau of Transportation in 2018, the Tokyo Metro Tōzai Line continues to be most crowded subway line in Tokyo, and the most crowded train line in all of Japan, with its peak running at 199% capacity{{Ref label|notes1|a|}} between {{stl|Tokyo Metro|Kiba}} and {{stl|Tokyo Metro|Monzen-Nakachō}} stations.<ref>''Metropolis'', [http://archive.metropolis.co.jp/tokyo/794/page2.asp "Commute", June 12, 2009, p. 07.] Capacity is defined as all passengers having a seat or a strap or door railing to hold on to.</ref><ref>{{Cite web|url=https://www.mlit.go.jp/common/001299797.pdf|title=Amount and a congestion rate of passengers who got on|archive-url=https://web.archive.org/web/20190920002726/https://www.mlit.go.jp/common/001299797.pdf|archive-date=2019-09-20}}</ref> Women-only cars were introduced on the line for use during morning rush hour on November 20, 2006.

During the COVID-19 pandemic, peak ridership dropped from a rate of 199% in 2019 to 123% in 2020.

==History== {{More citations needed section|date=May 2022}}

=== Early years === The original plan for what is now the Tōzai Line was included in a report by the Tokyo City and Area Transportation Research Committee (東京市内外交通調査委員会), which was established within the Ministry of Home Affairs in 1917. The proposal outlined a route connecting “Ikebukuro – Takadanobaba – Iidabashi – Otemachi – Susaki”.

In 1920, a construction patent for this route was granted to the Tokyo Railway (東京鉄道). However, following the Great Kantō Earthquake of 1923, the patent was revoked along with those for other planned lines because construction had not yet commenced.

The route license for the Tōzai Line originates from the six municipal subway lines planned by Tokyo City, the predecessor of today’s Tokyo special wards, prior to World War II. The license was granted on May 16, 1925, under Ministry of Home Affairs Notification No. 56 of 1925 (大正14年内務省告示第56号).<ref name=":1">{{Cite web |title=丸ノ内線建設史（上巻） |url=https://metroarchive.jp/ebook_marunouchi_jou/index_h5.html#19 |access-date=2026-01-26 |website=metroarchive.jp |pages=19-24}}</ref><ref name=":0">{{Cite web |title=丸ノ内線建設史（上巻） |url=https://metroarchive.jp/ebook_marunouchi_jou/index_h5.html#295 |access-date=2026-01-26 |website=metroarchive.jp |pages=295-299}}</ref>

The present Tōzai Line corresponds to the former Line 5, which was authorized as a 14.2-kilometer route running from “Ikebukuro – Waseda – Iidamachi – Hitotsubashi – Tokyo – Eitaibashi – Susaki”.<ref name=":0" /> As part of the initial phase of the Tokyo Municipal Subway project, Tokyo City planned to begin construction on Line 3 between Shibuya and Sugamo and on Line 5 between Ikebukuro and Susaki. However, due to the city’s substantial public debt and concerns over deteriorating finances, the Ministry of Home Affairs and the Ministry of Finance opposed the project, and construction approval was not granted.<ref name=":1" />

Following this setback, no further construction plans were pursued, and the Teito Rapid Transit Authority, commonly known as the Eidan Subway, was subsequently established. In 1941, all subway route licenses held by the Tokyo municipal government were transferred to the Teito Rapid Transit Authority in exchange for compensation.<ref name=":1" />

By contrast, the section corresponding to the present-day Tōyōchō to Nishi-Funabashi segment was originally licensed to the Tokyo Narishiba Electric Railway (東京成芝電気鉄道) prior to World War II. The application was approved in 1927, with the eastern terminus Tōyōchō designated as Higashi-hirai. However, this license ultimately expired in 1940 after construction failed to proceed.

=== Post-war construction === The Tōzai Line was planned by a review committee of the then Ministry of Transportation in 1962 and numbered '''Line 5'''. Its name literally means "East-West Line", and it was primarily planned to relieve traffic on the busy Sōbu Main Line as well as provide a straight crosstown connection through north-central Tokyo. Although this corridor is also served by the Tokyo Metropolitan Bureau of Transportation (Toei) Shinjuku Line and JR Keiyō Line, the Tōzai Line continues to operate beyond capacity due to its accessibility to other lines, as well as to growing condominium developments in eastern Tokyo.

The {{stl|Tokyo Metro|Takadanobaba}} to {{stl|Tokyo Metro|Kudanshita}} section opened in 1964,<ref>{{Cite web |title=History |url=https://www.tokyometro.jp/lang_en/corporate/profile/history/index.html |archive-url=https://web.archive.org/web/20230605063443/https://www.tokyometro.jp/lang_en/corporate/profile/history/index.html |archive-date=2023-06-05 |access-date=2024-07-13 |website=tokyometro.jp}}</ref> and the remainder opened in stages until its completion in 1969. Through service with the then Japanese National Railways (today part of the JR Group) – a first for a Tokyo subway line – began in 1969 connecting the Chūō and Sōbu lines. This is a rare situation in Tokyo, as the only other subway line with through services onto JR lines is the Chiyoda Line.

Due to a surge in ridership on the Tōzai Line, the Teito Rapid Transit Authority (TRTA) introduced 12 new-build 5000 series cars and transferred 50 from the Chiyoda Line in 1981 in an effort to increase capacity on the line. Rapid residential development in the Urayasu and Kasai areas further increased demand. In response, TRTA introduced rapid trains that ran non-stop between {{stl|Tokyo Metro|Nishi-Funabashi}} and {{stl|Tokyo Metro|Toyocho}} stations, and stopped at every station west of {{stl|Tokyo Metro|Urayasu}}, in November 1986.<ref name="railfan319">{{Cite magazine |date=November 1987 |orig-date= |title= |script-title=ja:営団地下鉄東西線に8000系登場 |trans-title=The 8000 series train debuts on the Eidan Tozai Line |magazine=Japan Railfan Magazine |publisher=Koyusha Co., Ltd. |location=Japan |pages=62–63 |language=ja |volume=27 |issue=319}}</ref>

The Tōyō Rapid Railway Line, effectively an eastward extension of the line, opened in 1996. It nevertheless remains a private entity to which the Tōzai lines offers through services.

===Chronology=== *March 16, 1966: The line is extended at both ends. It now runs between Nakano and Takebashi. *April 28, 1966: Through service to the Chūō Line of JNR commences as far as Ogikubo. *October 1, 1966: Takebashi to Ōtemachi section opens. *September 14, 1967: Ōtemachi to Tōyōchō section opens. *March 29, 1969: Tōyōchō to Nishi-Funabashi section opens and Rapid service begins (non-stop between Tōyōchō and Nishi-Funabashi). *April 8, 1969: Through service on the Chūō Line is extended to Mitaka, and through service begins on the Sōbu line to Tsudanuma. *April 8, 1972: Through service on the Sōbu Line is withdrawn except during rush hours. *1975: Another type of Rapid service is introduced, calling at Urayasu between Tōyōchō and Nishi-Funabashi. *October 1, 1979: Nishi-Kasai station opens. *March 27, 1981: Minami-Gyōtoku station opens. *1986: Commuter Rapid service is introduced, running non-stop between Urayasu and Nishi-Funabashi. *(April 1, 1987: JNR is privatised. The Chūō and Sōbu lines become the property of JR East.) *1996: The Rapid service that runs non-stop between Tōyōchō and Nishi-Funabashi ceases. *April 27, 1996: Tōyō Rapid Line opens between Nishi-Funabashi and Tōyō-Katsutadai. Through service begins. *January 22, 2000: Myōden station opens. *April 1, 2004: Teito Rapid Transit Authority (TRTA or Eidan) becomes Tokyo Metro.<ref>{{Cite web |date=2006-07-08 |title=「営団地下鉄」から「東京メトロ」へ |trans-title=From "Teito Rapid Transit Authority" to "Tokyo Metro" |url=https://www.tokyometro.jp/news/s2004/2004-06.html |url-status=dead |archive-url=https://web.archive.org/web/20120516041232/http://www.tokyometro.jp/news/s2004/2004-06.html |archive-date=16 May 2012 |access-date=29 May 2022 |website=Tokyo Metro Online |language=ja}}</ref> *November 20, 2006: Women-only cars are introduced during morning rush hours.

==Services== The Tōzai Line was the first Tokyo Metro line on which express services run: two types of rapid trains skip some stations east of Toyocho. The Tokyo Metro Fukutoshin Line began services on June 14, 2008, and also features express services.

Through services to {{stl|JR East|Mitaka}} via the JR East Chūō Line and {{stl|Toyo|Tōyō-Katsutadai}} via the Tōyō Rapid Railway run all day. Outside of rush hours, only local trains run through to the Chūō Line and only rapid trains run through to the Tōyō Rapid Railway. During the morning and evening peak periods, through services run to {{stl|JR East|Tsudanuma}} via the JR East Sōbu Line.

== Stations == center|thumb|900x900px|List of Tozai line stations *Local trains stop at every station. Rapid trains stop at stations marked "●" and do not stop at those marked "｜". Some weekday westbound trains do not stop at stations marked "↑".

{| class="wikitable" rules="all" |- !rowspan="2"|No. !rowspan="2"|Station !rowspan="2"|Japanese !colspan="2"|Distance (km) !rowspan="2"|Comm. Rapid !rowspan="2"|Rapid !rowspan="2"|Transfers !rowspan="2" colspan="2"|Location |- !Between<br/>stations !From Nakano |- | colspan="10" align="center"|'''↑ Through-services to/from {{stl|JR East|Mitaka}} via {{ric|JR East|JB|name=y}} ↑''' |- |{{TMSN|T|01|40}} |{{stl|Tokyo Metro|Nakano}} |中野<ref group="*">Nakano is shared by Tokyo Metro and JR East; JR East manages the station.</ref> | style="text-align:right;"| – | style="text-align:right;" |0.0 | style="background-color:#afb; text-align:center;" |● | style="background-color:#fab; text-align:center;" |● |{{Plainlist| * {{ric|JR East|JB|name=y}} (JB07) * {{ric|JR East|JC|name=y}} (JC06) }} |Nakano | rowspan="17" style="text-align:center; width:1em; line-height:3;" |Tokyo |- | {{TMSN|T|02|40}} |{{stl|Tokyo Metro|Ochiai}} |落合 |style="text-align:right;"|2.0 |style="text-align:right;"|2.0 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |&nbsp; |rowspan="4"|Shinjuku |- | {{TMSN|T|03|40}} |{{stl|Tokyo Metro|Takadanobaba}} |高田馬場 |style="text-align:right;"|1.9 |style="text-align:right;"|3.9 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |{{Plainlist| * {{ric|Tokyo Metro|F|name=y}} ({{stl|Tokyo Metro|Nishi-waseda}}: F-11)<ref group="*">Both Tokyo Metro stations are displayed on station maps as being distant from one another, and they are not announced as transfer points for one another.</ref> * {{ric|JR East|JY|name=y}} (JY15) * {{ric|Seibu|SS|name=y}} (SS02) }} |- | {{TMSN|T|04|40}} |{{stl|Tokyo Metro|Waseda|x|Tokyo Metro}} |早稲田 |style="text-align:right;"|1.7 |style="text-align:right;"|5.6 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |{{ric|Toei|TA|name=y}} ({{stl|Toei|Waseda}}: SA30)<ref group="*">Both the Tokyo Metro and Toei stations are displayed on station maps as being distant from one another, and they are not announced as transfer points for one another.</ref> |- | {{TMSN|T|05|40}} |{{stl|Tokyo Metro|Kagurazaka}} |神楽坂 |style="text-align:right;"|1.2 |style="text-align:right;"|6.8 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |&nbsp; |- | {{TMSN|T|06|40}} |{{stl|Tokyo Metro|Iidabashi}} |飯田橋 |style="text-align:right;"|1.2 |style="text-align:right;"|8.0 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |{{Plainlist| * {{ric|Tokyo Metro|N|name=y}} (N-10) * {{ric|Tokyo Metro|Y|name=y}} (Y-13) * {{ric|Toei Subway|E|name=y}} (E-06) * {{ric|JR East|JB|name=y}} (JB16) }} |rowspan="4"|Chiyoda |- | {{TMSN|T|07|40}} |{{stl|Tokyo Metro|Kudanshita}} |九段下 |style="text-align:right;"|0.7 |style="text-align:right;"|8.7 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |{{Plainlist| * {{ric|Tokyo Metro|Z|name=y}} (Z-06) * {{ric|Toei Subway|S|name=y}} (S-05) }} |- | {{TMSN|T|08|40}} |{{stl|Tokyo Metro|Takebashi}} |竹橋 |style="text-align:right;"|1.0 |style="text-align:right;"|9.7 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |&nbsp; |- | {{TMSN|T|09|40}} |{{stl|Tokyo Metro|Ōtemachi}} |大手町 |style="text-align:right;"|1.0 |style="text-align:right;"|10.7 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |{{Plainlist| * {{ric|Tokyo Metro|M|name=y}} (M-18) * {{ric|Tokyo Metro|C|name=y}} (C-11) * {{ric|Tokyo Metro|Z|name=y}} (Z-08) * {{ric|Toei Subway|I|name=y}} (I-09)}} |- | {{TMSN|T|10|40}} |{{stl|Tokyo Metro|Nihombashi}} |日本橋 |style="text-align:right;"|0.8 |style="text-align:right;"|11.5 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |{{Plainlist| * {{ric|Tokyo Metro|G|name=y}} (G-11) * {{ric|Toei Subway|A|name=y}} (A-13) }} |rowspan="2"|Chūō |- |{{TMSN|T|11|40}} |{{stl|Tokyo Metro|Kayabachō}} |茅場町 |style="text-align:right;"|0.5 |style="text-align:right;"|12.0 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |{{ric|Tokyo Metro|H|name=y}} (H-13) |- |{{TMSN|T|12|40}} |{{stl|Tokyo Metro|Monzen-Nakachō}} |門前仲町 |style="text-align:right;"|1.8 |style="text-align:right;"|13.8 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |{{ric|Toei Subway|E|name=y}} (E-15) |rowspan="4"|Kōtō |- | {{TMSN|T|13|40}} |{{stl|Tokyo Metro|Kiba}} |木場 |style="text-align:right;"|1.1 |style="text-align:right;"|14.9 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |&nbsp; |- | {{TMSN|T|14|40}} |{{stl|Tokyo Metro|Tōyōchō}} |東陽町 |style="text-align:right;"|0.9 |style="text-align:right;"|15.8 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |&nbsp; |- | {{TMSN|T|15|40}} |{{stl|Tokyo Metro|Minami-Sunamachi}} |南砂町 |style="text-align:right;"|1.2 |style="text-align:right;"|17.0 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|<nowiki>|</nowiki> |&nbsp; |- | {{TMSN|T|16|40}} |{{stl|Tokyo Metro|Nishi-Kasai}} |西葛西 |style="text-align:right;"|2.7 |style="text-align:right;"|19.7 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|<nowiki>|</nowiki> |&nbsp; |rowspan="2"|Edogawa |- | {{TMSN|T|17|40}} |{{stl|Tokyo Metro|Kasai}}<ref name="passtrains">The local train stops to let the Rapid pass at this station.</ref> |葛西 |style="text-align:right;"|1.2 |style="text-align:right;"|20.9 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|<nowiki>|</nowiki> |&nbsp; |- | {{TMSN|T|18|40}} |{{stl|Tokyo Metro|Urayasu}} |浦安 |style="text-align:right;"|1.9 |style="text-align:right;"|22.8 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |&nbsp; |Urayasu |style="text-align:center; width:1em;" rowspan="6"|Chiba |- | {{TMSN|T|19|40}} |{{stl|Tokyo Metro|Minami-Gyōtoku}} |南行徳 |style="text-align:right;"|1.2 |style="text-align:right;"|24.0 |style="background-color:#afb; text-align:center;"|↑ |style="background-color:#fab; text-align:center;"|<nowiki>|</nowiki> |&nbsp; |rowspan="3"|Ichikawa |- |{{TMSN|T|20|40}} |{{stl|Tokyo Metro|Gyōtoku}} |行徳 |style="text-align:right;"|1.5 |style="text-align:right;"|25.5 |style="background-color:#afb; text-align:center;"|↑ |style="background-color:#fab; text-align:center;"|<nowiki>|</nowiki> |&nbsp; |- | {{TMSN|T|21|40}} |{{stl|Tokyo Metro|Myōden}}<ref name="passtrains"/> |妙典 |style="text-align:right;"|1.3 |style="text-align:right;"|26.8 |style="background-color:#afb; text-align:center;"|↑ |style="background-color:#fab; text-align:center;"|<nowiki>|</nowiki> |&nbsp; |- | {{TMSN|T|22|40}} |{{stl|Tokyo Metro|Baraki-Nakayama}}<ref name="passtrains"/> |原木中山 |style="text-align:right;"|2.1 |style="text-align:right;"|28.9 |style="background-color:#afb; text-align:center;"|↑ |style="background-color:#fab; text-align:center;"|<nowiki>|</nowiki> |&nbsp; |rowspan="2"|Funabashi |- | {{TMSN|T|23|40}} |{{stl|Tokyo Metro|Nishi-Funabashi}} |西船橋<ref group="*">Nishi-Funabashi is shared by Tokyo Metro, Tōyō Rapid Railway, and JR East; JR East and Tokyo Metro manage the station.</ref> |style="text-align:right;"|1.9 |style="text-align:right;"|30.8 |style="background-color:#afb; text-align:center;"|● |style="background-color:#fab; text-align:center;"|● |{{Plainlist| * {{ric|Tōyō Rapid Railway Line|Toyo|name=y}} (TR01) * {{ric|JR East|JB|name=y}} (JB30) * {{ric|JR East|JM|name=y}} (JM10) * {{ric|JR East|JE|name=y}} (JM10) }} |- | colspan="10" align="center"|↓ '''Through-services to/from:''' ↓ *{{stl|Toyo|Yachiyo-Midorigaoka}}, {{stl|Toyo|Tōyō-Katsutadai}} via {{ric|Tōyō Rapid Railway Line|Toyo|name=y}} *Limited through-services to/from {{stl|JR East|Tsudanuma}} via {{ric|JR East|JB|name=y}} |} {{Reflist|group="*"}}

==Rolling stock==

===Present=== Tōzai Line trains are 10-car formations of {{Convert|20|m|ftin|sp=us|adj=on}}-long cars, with four doors per side and longitudinal seating. The maximum operating speed is {{Cvt|100|km/h}}. Newer trains feature wide doors to allow for faster boarding times. *Tokyo Metro **05/05N series (since 1988) **07 series (since 2006) (transferred from Yūrakuchō Line) **15000 series (since 2010) *Tōyō Rapid Railway **2000 series (since 2004) *East Japan Railway Company (JR East) **E231-800 series (since 2003) <gallery widths=180> File:Tokyo-Metro Series05-122F.jpg|Tokyo Metro 05 series File:Tokyo-Metro Series05-143F.jpg|Tokyo Metro 05N series File:Tokyo-Metro Series07R-76.jpg|Tokyo Metro 07 series File:Tokyo-Metro Series15000-15001.jpg|Tokyo Metro 15000 Series File:Toyo-Rapid-Railway Series2000-2009.jpg|Toyo Rapid 2000 series File:JRE Series-E231-800 K5.jpg|JR East E231-800 series </gallery>

===Past=== *Tokyo Metro **5000 series (from 1964 until 2007) **8000 series (from 1987 until 1988, temporary, built for Hanzōmon Line) *JR East **301 series (from 1966 until 2003) **103-1000 series (from 1989 until 2003) **103-1200 series (from 1971 until 2003) *Tōyō Rapid **1000 series (from 1996 until 2006)

<gallery widths=180> File:Model 5000-Stainless Steel of Teito Rapid Transit Authority.JPG|5000 series with stainless steel body File:Model 5000-Aluminum of Teito Rapid Transit Authority.JPG|5000 series with aluminium body File:営団-8014.jpg|8000 series File:301 K5 Mitaka 20030222.JPG|JR East 301 series in February 2003 File:Jnr 103-1200.jpg|JR East 103–1200 series File:Tōyō Rapid 1008F.JPG|Tōyō Rapid 1000 series in September 2006 </gallery>

==Depots== {{Multiple image |width=125 |image1=Fukagawakojyou.JPG |caption1=05N series EMU at Fukagawa Workshop |image2=Tokyo-Metro-Fukagawa-Depot.jpg |caption2=Fukagawa Depot, April 2021 }} *Fukagawa Depot (深川検車区) *Gyōtoku Depot (深川検車区行徳分室) *Fukagawa Workshop (深川工場) {{clear}}

==Notes==

{{refbegin|}} a. {{note|notes1}}Crowding levels defined by the Ministry of Land, Infrastructure, Transport and Tourism:<ref>{{Cite web|url=https://www.mlit.go.jp/tetudo/toshitetu/03_04.html|title = 混雑率の推移}}</ref><ref>{{cite web|url=https://www.japantimes.co.jp/news/2017/07/06/national/tokyo-plans-new-effort-ease-crowding-rush-hour-trains/ |title=Tokyo plans new effort to ease commuter hell on rush-hour trains |first=Daisuke |last=Kikuchi |date=6 July 2017 |work=The Japan Times |archive-url=https://web.archive.org/web/20170706120354/http://www.japantimes.co.jp/news/2017/07/06/national/tokyo-plans-new-effort-ease-crowding-rush-hour-trains/ |archive-date=6 July 2017 |url-status=live}}</ref>

:100% — Commuters have enough personal space and are able to take a seat or stand while holding onto the straps or hand rails. :150% — Commuters have enough personal space to read a newspaper. :180% — Commuters must fold newspapers to read. :200% — Commuters are pressed against each other in each compartment but can still read small magazines. :250% — Commuters are pressed against each other, unable to move. {{refend}}

==References== {{refbegin}} * Shaw, Dennis and Morioka, Hisashi, "Tokyo Subways", published 1992 by Hoikusha Publishing {{refend}} {{reflist}}

==External links== {{Commons}} * [http://www.tokyometro.jp/global/en/index.html Tokyo Metro website] {{in lang|en}}

{{Tokyo Metro Tozai Line}} {{Tokyo transit}}

{{DEFAULTSORT:Tokyo Metro Tozai Line}} Category:Lines of Tokyo Metro Category:Railway lines in Tokyo Category:Railway lines in Chiba Prefecture Category:Railway lines opened in 1964 Category:1067 mm gauge railways in Japan Category:1500 V DC railway electrification Category:Tokyo Metro Tozai Line