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Keiyō Line

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Keiyō Line
A Keiyō Line E233-5000 series EMU in May 2018
Overview
Native name京葉線
StatusOperational
OwnerJR East
LocaleTokyo, Chiba Prefecture
Termini
Stations19
Service
TypeCommuter rail
DepotNarashino
Rolling stockE233-5000 series, 209-500 series
Daily ridership714,053 (Daily 2015)[1]
History
OpenedMay 10, 1975; 51 years ago (May 10, 1975)
Technical
Line length43 km (27 mi)
CharacterUnderground, at-grade, elevated
Track gauge1,067 mm (3 ft 6 in)
ElectrificationOverhead line, 1,500 V DC
Operating speed100 km/h (62 mph)
Route map

The Keiyō Line (Japanese: 京葉線, Hepburn: Keiyō-sen) is a railway line connecting Tokyo and Chiba in Japan, running along the eastern shore of Tokyo Bay. It is operated by the East Japan Railway Company (JR East). The line forms part of what JR East refers to as the "Tokyo Mega Loop" (東京メガループ), consisting of the Keiyō Line, Musashino Line, Nambu Line, and Yokohama Line.[2] The line provides rail access to Tokyo Disney Resort and the Makuhari Messe exhibition center.

The terminus at Tokyo Station is located underground, south of the main station complex and roughly halfway toward Yūrakuchō Station. Transfers between the Keiyō Line and other lines at Tokyo Station can take between 15 and 20 minutes.

The name "Keiyō" is derived from the second character in the names of the two cities linked by the line, Tokyo (東京) and Chiba (千葉).

Services

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  •   Local (各駅停車, kakueki-teisha) trains stop at all stations between Tokyo and Soga except Nishi-Funabashi.
  •   Rapid (快速, kaisoku) trains stop at Tokyo, Hatchōbori, Shin-Kiba, Maihama, Shin-Urayasu, Minami-Funabashi, Kaihin-Makuhari, and all stops to Soga.
  •   Musashino Line ''Local'' through trains stop at all stations between Tokyo and Nishi-Funabashi before continuing to the Musashino Line. Some trains originate at Kaihin-Makuhari, stopping at Makuhari-Toyosuna, Shin-Narashino, Minami-Funabashi, and Nishi-Funabashi before continuing onto the Musashino Line.

Former service

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  •   Commuter rapid service (通勤快速, tsūkin-kaisoku) trains stopped at Tokyo, Hatchōbori, Shin-Kiba, and Soga, with many operating through to the Sotobo line and Togane line, terminating at Naruto, Katsuura, or Kazusa-Ichinomiya. Commuter rapid trains traveled into Tokyo during the morning rush hour, and away from Tokyo during the evening rush hour. The commuter rapid service was discontinued with effect from the timetable revision implemented on 16 March 2024.[3]

Station list

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  • All trains (except limited express services) stop at stations marked "●" and pass those marked "|". Trains do not travel past those stations marked "||".
  • For the Wakashio and Sazanami limited express services, see their respective articles.
No. Station Distance in km (mi)
Rapid
 Musashino Line Transfers Location
Between
stations		 Total to/from
Chiba		 to/from
Tokyo
TYOJE01
 Tokyo
東京		 N/a 0 (0) ● ●
Chiyoda Tokyo
JE02 Hatchōbori
八丁堀		 1.2 (0.75) 1.2 (0.75) ● ● Hibiya Line (H-12) Chūō
JE03 Etchūjima
越中島		 1.6 (0.99) 2.8 (1.7) | ● Kōtō
JE04 Shiomi
潮見		 2.6 (1.6) 5.4 (3.4) | ●
JE05 Shin-Kiba
新木場		 2.0 (1.2) 7.4 (4.6) ● ●
JE06 Kasai-Rinkai Park
葛西臨海公園		 3.2 (2.0) 10.6 (6.6) | ● Edogawa
JE07 Maihama
舞浜		 2.1 (1.3) 12.7 (7.9) ● ● Disney Resort Line Disney Resort Line (Resort Gateway) Urayasu Chiba
JE08 Shin-Urayasu
新浦安		 3.4 (2.1) 16.1 (10.0) ● ●
JE09 Ichikawashiohama
市川塩浜		 2.1 (1.3) 18.2 (11.3) | ● Musashino Line (through service) Ichikawa
JE10 Futamatashimmachi
二俣新町		 4.4 (2.7) 22.6 (14.0) | ||[a]
JE11 Minami-Funabashi
南船橋		 3.4 (2.1)[b] 26.0 (16.2) ● ● Musashino Line (through service) Funabashi
JE12 Shin-Narashino
新習志野		 2.3 (1.4) 28.3 (17.6) | ● Narashino
JE13 Makuhari-Toyosuna
幕張豊砂		 1.7 (1.1) 30.0 (18.6) | ● Mihama
JE14 Kaihin-Makuhari
海浜幕張		 1.7 (1.1) 31.7 (19.7) ● ●
JE15 Kemigawahama
検見川浜		 2.0 (1.2) 33.7 (20.9) ●
JE16 Inagekaigan
稲毛海岸		 1.6 (0.99) 35.3 (21.9) ●
JE17 Chibaminato
千葉みなと		 3.7 (2.3) 39.0 (24.2) ● Chiba Urban Monorail (CM01) Chūō
Soga
蘇我		 4.0 (2.5) 43.0 (26.7) ●
  1. ↑ Musashino Line trains do not pass through Futamatashimmachi.
  2. ↑ Distance between Nishi-Funabashi on the Musashino Line and Minami-Funabashi is 5.4 km (3.4 mi).
  3. 1 2 Some local and rapid trains run through to the Uchibō Line (to/from Kimitsu or from Kazusa-Minato) or the Sotobō Line (to/from Honda, Kazusa-Ichinomiya, and via the Tōgane Line to/from Narutō).


Rolling stock

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All Keiyō Line and Musashino Line rolling stock is based at the Keiyō Rolling Stock Center near Shin-Narashino Station.

Keiyō Line

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Musashino Line through services

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  • 209-500 series 8-car EMUs (orange/brown stripe) (since 4 December 2010)[5]
  • E231-0 series 8-car EMUs (orange/brown stripe) (since November 2017)
  • E231-900 series 8-car EMU (orange/brown stripe) (since 20 July 2020)[6]

Former rolling stock

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Keiyō Line

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  • 103 series 4/6/10-car EMUs (sky blue livery) (from 1986 until November 2005)
  • 165 series 3-car EMU (x1) Shuttle Maihama (from 1990 until 1995)
  • 201 series 10-car EMUs (sky blue livery) (from August 2000 until 20 June 2011)[7]
  • 205-0 series 10-car EMUs (magenta stripe) (from March 1990 until 2011)
  • E331 series 14-car EMU (x1) (magenta stripe) (from March 2007 until 2011)[8]

Musashino Line through services

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Inter-running from the Musashino Line to the Keiyō Line commenced on 1 December 1988.[9]

  • 103 series 6-car (later 8-car) EMUs (orange livery) (from 1 December 1988 - 8 December 2005)
  • 201 series 6-car EMUs (orange livery) (from 1 December 1988 - November 1996)
  • 205-0 series 8-car EMUs (orange/brown stripe) (from December 1991 - October 2019)
  • 205-5000 series 8-car EMUs (orange/brown stripe) (from 2002 - 19 October 2020)

Timeline

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103 series
165 series
205 series
201 series
E331 series
209-500 series
E233-5000 series
103 series
201 series
205-0 series
205-5000 series
209-500 series
E231-0 series
E231-900 series
│
1985
│
1990
│
1995
│
2000
│
2005
│
2010
│
2015
│
2020
Rolling stock transitions since 1986

History

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The Keiyo Line was initially planned as a freight-only line. Its first section opened on 10 May 1975 as a 6.5 km (4.0 mi) link between the Chiba Freight Terminal and the freight yard next to Soga Station.[10]

Passenger service began on 3 March 1986 between Minami-Funabashi and Chibaminato.[11] On 1 December 1988, the line was extended west from Minami-Funabashi to Shin-Kiba and a branch opened between Ichikawashiohama and Nishi-Funabashi.[11] The final section, between Tokyo and Shin-Kiba, opened on 10 March 1990.[10] The 205 series was also introduced on the line that year. On 16 March 1991, Sazanami and Wakashio limited express services were rerouted via the Keiyo Line.[11] 255 series EMUs were introduced on View Sazanami and View Wakashio services on 2 July 1993, followed by E257-500 series EMUs on Sazanami and Wakashio services on 16 October 2004.[11]

Planners originally envisioned a freight line connecting with Tokyo Freight Terminal and the Tokaido Main Line, providing a connection between the Musashino Line and the freight network south of Tokyo. The Rinkai Line later reused the partially completed tunnel between Shin-Kiba and Tokyo Freight Terminal, with part of the tracks at the latter used as a depot. The disused tracks between Tokyo Freight Terminal and the Tokaido Main Line are planned for reuse as part of the Haneda Airport Access Line.

The platforms at Tokyo Station were originally built to accommodate the Narita Shinkansen, a planned high-speed railway between central Tokyo and Narita International Airport that was never completed.[12]

In the 1990s, as Odaiba developed as a commercial and tourist area, the Rinkai Line was repurposed for passenger service. The Rinkai Line has a through connection with the Keiyo Line, but passenger trains use the connection only for charter services, usually carrying groups to the Tokyo Disney Resort.

With the timetable revision on 16 March 2024, JR East reduced the number of rapid services on the Keiyo Line and discontinued Commuter Rapid services during the morning and evening rush hours. Rapid trains no longer operate during those periods, except for two westbound morning services originating in Soga. Local trains operate during the affected periods. The Wakashio and Sazanami limited express services therefore provide the remaining express services between the Uchibo and Sotobo lines and Tokyo during rush hours. The Chiba prefectural government criticized the timetable revision, stating that the changes would inconvenience commuters traveling between central Tokyo and areas of Chiba Prefecture. It cited longer journey times for passengers traveling the length of the line because local trains take longer than rapid services.[13]

On 20 August 2016, station numbering was introduced on the Keiyo Line, with stations assigned numbers from JE01 at Tokyo to JE16 at Chibaminato.[14][15] On 18 March 2023, Makuharitoyosuna Station opened between Kaihin-Makuhari and Shin-Narashino, and the station numbers for stations from Kaihin-Makuhari to Chibaminato increased by one.[16]

Future plans

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A proposal has been made to introduce 12-car trains with Green Cars on the Keiyo Line, similar to the configuration used on the Chuo Line Rapid. The proposal would require platform extensions and other infrastructure work.[citation needed]

References

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  1. ↑ "平成27年 大都市交通センサス 首都圏報告書" (PDF). P.92. 国土交通省.
  2. ↑ Saka, Masayuki (August 2014). 東京メガループ 車両・路線の沿革と現況 [Tokyo Megaloop: History and current situation of trains and line]. Tetsudō Daiya Jōhō Magazine (in Japanese). Vol. 43, no. 364. Japan: Kōtsū Shimbun. pp. 28–39.
  3. ↑ "京葉線で通勤快速列車の運転終了" [Commuter Rapid service on Keiyo Line ended]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 16 March 2024. Retrieved 14 April 2024.
  4. ↑ "E233系5000番代 営業運転開始 (E233-5000 series enters revenue service)". Hobidas (in Japanese). Neko Publishing. 1 July 2010. Archived from the original on 25 March 2017. Retrieved 24 March 2014.
  5. ↑ JR電車編成表 2013夏 [JR EMU Formations - Summer 2013]. Japan: JRR. May 2013. p. 47. ISBN 978-4-330-37313-3.
  6. ↑ "【元209系】E231系900番台試作車・MU1編成として武蔵野線で"再出発"" [[Former 209 series] E231-900 series prototype train restarts on Musashino Line as MU1]. 20 July 2020.
  7. ↑ 京葉線の201系が定期運用を終える [Keiyō Line 201 series withdrawn from regular service]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 21 June 2011. Retrieved 21 June 2011.
  8. ↑ "E331系AK1編成長野へ配給" [E331 series set AK1 moved to Nagano]. RM News (in Japanese). Japan: Neko Publishing Co., Ltd. 27 March 2014. Archived from the original on 27 March 2014. Retrieved 10 April 2014.
  9. ↑ 首都圏鉄道完全ガイド 主要JR路線編 [Tokyo Area Complete Railway Guide - Major JR Lines]. Japan: Futabasha. 6 December 2013. pp. 87–97. ISBN 978-4-575-45414-7.
  10. 1 2 Ishino, Tetsu, ed. (1998). 停車場変遷大辞典 国鉄・JR編 [Station Transition Directory - JNR/JR]. Vol. I. Japan: JTB. p. 211. ISBN 4-533-02980-9.
  11. 1 2 3 4 Kubo, Satoshi (August 2015). 東京駅開業100周年-5 京葉線ターミナル [Tokyo Station 100th Anniversary (5) Keiyo Line Terminal]. Japan Railfan Magazine (in Japanese). Vol. 55, no. 652. Japan: Koyusha Co., Ltd. p. 105.
  12. ↑ "東京駅の京葉線、なぜ遠い？近道は有楽町 成田新幹線構想を再利用" [Why is Keiyo Line so far away at Tokyo Station?]. Nikkei Shimbun. 4 February 2014. Retrieved 4 February 2014. (registration required)
  13. ↑ "JR東日本ダイヤ改正 京葉線 早朝の上り快速2本の運行継続決定" [JR East Revises March Schedule Revision; Reinstates Rapid Service in the Morning Rush]. NHK News (in Japanese). 16 January 2024. Archived from the original on 16 January 2024. Retrieved 7 January 2023.
  14. ↑ "⾸都圏エリアへ 「駅ナンバリング」を導⼊します" [Introduce “station numbering” to the Tokyo metropolitan area] (PDF). jreast.co.jp (in Japanese). 6 April 2016. Archived from the original (PDF) on 7 December 2022. Retrieved 7 January 2023.
  15. ↑ Kusamachi, Yoshikazu (7 April 2016). "JA・JK・JT・AKB…JR東日本、首都圏で駅ナンバリングなど導入へ" [JA, JK, JT, AKB … JR East to introduce station numbering in the Tokyo metropolitan area]. Response Automotive Media (in Japanese). Archived from the original on 6 August 2022. Retrieved 7 January 2023.
  16. ↑ "幕張新都心エリアの新駅「幕張豊砂駅」開業 千葉県内では25年ぶり". newsdig.tbs.co.jp. 18 March 2023. Retrieved 18 March 2023.
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