Keiyō Line E233-5000 series EMU, July 2010
|Locale||Tokyo, Chiba Prefecture|
|Line length||43 km (27 mi)|
|Track gauge||1,067 mm (3 ft 6 in)|
|Electrification||1,500 V DC overhead catenary|
|Operating speed||100 km/h (62 mph)|
It provides the main rail access to the Tokyo Disney Resort and the Makuhari Messe exhibition center. The terminus at Tōkyō Station is located underground, some distance to the south of the main station complex approximately halfway to Yūrakuchō Station. This means transfer between other lines at Tokyo Station can take between 15 and 20 minutes.
The name Keiyō is derived from the second characters of the names of the locations linked by the line, Tōkyō (東京) and Chiba (千葉). It should not be confused with the Keiō Line, a privately operated commuter line in western Tokyo.
- Keiyō Line local trains stop at all stations between Tōkyō and Soga except Nishi-Funabashi.
- Keiyō Line rapid service trains stop at Tōkyō, Hatchōbori, Shin-Kiba, Maihama, Shin-Urayasu, Minami-Funabashi, Kaihin-Makuhari and all stops to Soga.
- Musashino Line local trains stop at Nishi-Funabashi, Minami-Funabashi, Shin-Narashino, and Kaihin-Makuhari.
- Musashino Line rapid service trains stop at all stations between Tōkyō and Nishi-Funabashi before continuing to the Musashino Line.
- Commuter rapid service (通勤快速 tsūkin-kaisoku ) trains stop at Tōkyō, Hatchōbori, Shin-Kiba, and Soga.
- All trains (except limited express services) stop at stations marked "●" and pass those marked "｜". Trains do not travel past those stations marked "∥".
- Musashino Line through services stop at stations marked "◆" on weekends and at stations marked "◆" and "○" during all-night services on New Year's Eve.
- For the Wakashio and Sazanami limited express services, see their respective articles.
|Tokyo||東京||-||0.0||●||●||●||●||Tōhoku Shinkansen, Jōetsu Shinkansen, Nagano Shinkansen, Yamanote Line, Chūō Line, Tōkaidō Main Line, Sōbu Line (Rapid), Yokosuka Line, Keihin-Tōhoku Line
Tokyo Metro Marunouchi Line (M-17)
|Hatchōbori||八丁堀||1.2||1.2||●||●||●||●||Tokyo Metro Hibiya Line (H-11)||Chūō|
Tokyo Metro Yūrakuchō Line (Y-24)
|Maihama||舞浜||2.1||12.7||●||●||｜||●||Maihama Resort Line: Disney Resort Line (Resort Gateway)||Urayasu||Chiba|
|∥||∥||●||●||Musashino Line (through service), Sōbu Line
Tokyo Metro Tōzai Line (T-23)
Tōyō Rapid Railway Line
Keisei Main Line (Keisei Nishifuna)
|Distance is from Ichikawa-Shiohama||Ichikawa|
|Minami-Funabashi||南船橋||3.4||26.0||●||●||｜||●||Distance between Nishi-Funabashi and Minami-Funabashi is 5.4 km||Funabashi|
|Chiba-Minato||千葉みなと||3.7||39.0||●||●||｜||Chiba Urban Monorail: Line 1||Chūō-ku, Chiba|
|Soga||蘇我||4.0||43.0||●||●||●||Uchibō Line, Sotobō Line (some through services to each)[* 3]|
- Keiyō trains between Tokyo and Soga do not pass through Nishi-Funabashi.
- Musashino rapid trains do not pass through Futamata-Shinmachi.
- Some local and Keiyō rapid, and all Commuter Rapid trains, run through to the Uchibō Line (mainly to Kimitsu or Kazusa-Minato) or the Sotobō Line (mainly Kazusa-Ichinomiya, Katsuura, and via the Tōgane Line to Narutō).
All Keiyō Line rolling stock is based at the Keiyō Rolling Stock Center near Shin-Narashino Station
Rolling stock currently used
- 205 series 10-car EMUs (Keiyo Line magenta stripe) (from March 1990)
- 205 series 8-car EMUs (Musashino Line livery)
- 209-500 series 10-car EMUs (Keiyo Line magenta stripe) (from October 2008)
- 209-500 series 8-car EMUs (Musashino Line livery) (from 4 December 2010)
- E331 series 14-car EMU (x1) (magenta stripe) (from March 2007)
- E233 series 10-car EMUs (magenta stripe) (from summer 2010)
Rolling stock used in the past
- 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)
The Keiyō Line was initially planned as a freight-only line. Its first section opened in 1975 as a link between the Chiba Freight Terminal Station (now the Mihama New Port Resort between Inage-Kaigan and Chiba-Minato Stations) and the JFE Steel factory near Soga Station. Passenger service began in 1986 between Nishi-Funabashi and Chiba-Minato, and was extended eastward to Soga and westward to Shin-Kiba in 1988.
The final section of the Keiyō Line between Tōkyō and Shin-Kiba opened in 1990. The platforms at Tokyo Station were originally built to accommodate the Narita Shinkansen, a planned (but never built) high-speed rail line between central Tokyo and Narita International Airport.
Planners originally envisioned the Keiyō Line interfacing with the Rinkai Line at Shin-Kiba, thus providing a through rail connection between Chiba and the Tokyo Freight Terminal in eastern Shinagawa, and also completing the outer loop for freight trains around Tokyo formed by the Musashino Line. This original plan would also allow through service with the Tōkaidō Main Line, allowing freight trains from central and western Japan to reach Chiba and points east.
However, in the 1990s, as the artificial island of Odaiba began developing as a commercial and tourist area in the middle of the Rinkai Line route, the Rinkai Line was re-purposed for use as a passenger line. While there is a through connection between the Rinkai Line and the Keiyō Line, it is only used by passenger trains in charter service, usually carrying groups to the Tokyo Disney Resort.
- 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.
- JR East press release: "京葉線に最新型電車を導入" (2 September 2009). Retrieved on 2 September 2009. (Japanese)
- "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.
|Wikimedia Commons has media related to Keiyō Line.|
- Stations of the Keiyō Line (JR East) (Japanese)