Sōbu Main Line

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Sōbu Main Line
Sōbu/Yokosuka lines' E217 series EMU
Gauge:	1067 mm
Voltage:	1500 =
Legend Outline west of Chiba Chūō Main Line - 4.3 Ochanomizu "Chūō-Sōbu Line" Keihin Tōhoku Line Akihabara 0.0 Tokyo Yokosuka Line (R)"Sōbu Line (Rapid)" Ryōgoku 4.8 0.0 Kinshichō - 11.7 Etchūjima Freight Kameido Etchūjima freight line 7.2 0.0 Koiwa Shinkane freight line - 8.9 Kanamachi Jōban Line 20.6 Nishi-Funabashi Musashino Line 26.7 Tsudanuma Details east of Chiba Rapids stop: R with limited sevice: r Commuter Rapids stop: C (L)Chūō-Sōbu Line Chiba Urban Monorail 39.2 Chiba Uchibō, Sotobō lines (old) Chiba Chiba Urban Monorail Line 2 40.1 Higashi-Chiba    Chiba Urban Monorail Line 1 43.4 Tsuga RC Chiba Urban Monorail Line 1 46.9 Yotsukaidō RC 51.1 Monoi R  55.3 Sakura RC Narita Line 59.3 Minami-Shisui r  62.2 Enokido r  65.9 Yachimata r  71.7 Hyūga r  76.9 Narutō r  Tōgane Line 82.5 Matsuo 86.8 Yokoshiba 90.6 Iigura 93.7 Yōkaichiba 98.8 Higata 103.6 Asahi 106.3 Iioka 109.2 Kurahashi 111.8 Saruda Narita Line 117.3 Matsugishi 120.5 Chōshi Chōshi Electric Railway Line

Sōbu Main Line (総武本線, Sōbu-honsen^?) is a Japanese railway line formally between Tokyo and the east coast of Chiba Prefecture, operated by the East Japan Railway Company (JR East). It runs through the cities of Funabashi, Chiba, and Chōshi. Its name derives from the old provinces of the area which it serves: Musashi (武蔵国), Shimousa (下総国) and Kazusa (上総国).

Contents 1 Definition 2 Description 3 Operation 3.1 Limited Express 3.2 Rapid and Local 4 History 5 Stations 5.1 Tokyo - Kinshichō - Chiba 5.2 Ochanomizu - Kinshichō - Chiba 5.3 Chiba - Chōshi 6 References and footnotes 7 See also

[edit] Definition

The character of the line distincts at Chiba. Western urbanized section is informally but commonly called Sōbu Line (総武線, Sōbu sen^?) without "Main". Local and Rapid trains west of Chiba to Tokyo area are called another names, mentioned below. The name with "Main" in popular sense refers to the trains operated east of Chiba on the line. Announcements of the operator such as signboards in stations and trains, vocal announcements in trains have this distinction also, with "Main" for eastern rural section, without "Main" for western frequent zone.^[1]

[edit] Description

• Distances:
  • Tokyo - Chōshi: 120.5 km
  • Kinshichō - Ochanomizu: 4.3 km
  • Koiwa - Etchūjima Freight (freight line): 11.7 km
  • Koiwa - Kanamachi (freight line): 8.9 km
• Electrification: DC 1500 V excl. non electrified Etchūjima freight line
• Tracks
  • Quadruple: Kinshichō - Chiba
  • Double: Tokyo - Kinshichō, Kinshichō - Ochanomizu, Chiba - Sakura
  • Single: Sakura - Chōshi, Koiwa - Etchūjima Freight, Koiwa - Kanamachi

[edit] Operation

Local trains between Ochanomizu and Chiba are called the Chūō-Sōbu Line (中央・総武線, Chūō-Sōbu Line^?) or Sōbu-Local Line (総武緩行線, Sōbu-Kankō^?). Rapid trains are also operated, from Tokyo Station to Chiba Station and is called the Sōbu-Rapid Line or Sōbu Kaisoku Line (総武快速線, Sōbu Kaisoku sen^?). For the most part, these trains use the same line, except when they reach Tokyo: Sōbu-Kankō trains continue onto the Chūō Line, while Sōbu-Kaisoku trains continue onto the Yokosuka Line. The following sectiosn describe trains east of Chiba. For details west of Chiba, see relevant articles.

[edit] Limited Express

Narita Express to Narita Airport Station and the Ayame to Chōshi use Sōbu Main and Narita lines for their journey.

Shiosai, also a Limited Express service, from Tokyo to Chōshi also uses this line.

[edit] Rapid and Local

Rapid (快速, Kaisoku^?) and Commuter Rapid (通勤快速, Tsūkin Kaisoku^?)

All trains through west to Chiba. From Sakura, through to Narita Line. Few to Tōgane.

Local (普通, Futsū^?)

No through trains west of Chiba.

[edit] History

Initially the line was constructed by a private company, Sōbu Railway (総武鉄道, Sōbu Tetsudō^?) (1st). It opened the first service sections, between Ichikawa and Sakura in July 20, 1894, and extended for Tokyo City. On December of the year, Honjo (本所, Honjo^{? [2]} present Kinshichō) was opened, and in 1904, on the east bank of Sumida River, Ryōgokubashi (両国橋, Ryōgokubashi^?) (now Ryōgoku) became the terminal of this line. The accesses to the west to Tokyo City were tramways for passengers and ships for freights. From Sahara to the east, this line reached at another terminus, Chōshi in 1897.

The line was nationalized in 1907 under the Railway Nationalization Act, and double-tracked from Ryōgokubashi to Chiba till the next year. Pedecessor of Japan National Railways (JNR) planned to connect with other lines inside Tokyo. In 1932, new passenger line was opened from Ochanomizu to Ryōgoku (with new platform besides the original terminal facility), and frequent service of EMUs commenced. Electrification to Chiba was completed in 1935, and trains has run through from the Chūō line as local since then. But, except a few trains, no rapid service was operated on this line.

On March 10, 1945, Bombing of Tokyo which made casualties estimated at about 70,000 - 100,000 destroyed stations of the line. During the last days of World War II in 1945, the Imperial Japanese Army thought US Army would attempt a landing operation, "Operation Coronet", on the Kujūkuri Beach, and transferred troops on Sōbu Main Line.

Between Chiba and Chōshi, in rural area of Chiba Prefecture, steam traction was used till recently. Fish and soy sauce from the Chōshi were major goods of the line. Because of closeness to Tokyo, JNR did not provide rapid or express trains, such as Limited Expresses from Ryōgoku to Chōshi until 1958. JNR operated tourist trains from Ryōgoku destined to seaside resorts on the coast from the 1950s.

In the 1960s, JNR started the Five-Destination Operation (五方面作戦, Go Hōmen Sakusen^?) to hyper increase commuter demand, and it determined that a new rapid line would be constructed from Tokyo Station to Chiba. A new underground line from Tokyo to Kinshichō, and four-tracked section to Tsudanuma were opened in 1972, and the operator began frequent rapid service from Tokyo to Chiba, where four-tracked from Tsudanuma in 1981. The line was succeeded by the East Japan Railway Company (JR East) from 1987. The parallelling Keiyō Line was opened closer to the coast in 1990, first constructed for freight service but later for relieve passengers, however, Sōbu Main Line is still crowded in the mornings.

On the east of Chiba, electrification reached at Chōshi in 1974, and Limited Express Shiosai has been operated from the underground Tokyo Station since 1975. Freight services from Chōshi ceased in 1986, just before the privatalization of JNR, and regular passenger trains stopped using the Ryōgoku terminal platforms in 1988. JR East started new airport train, Narita Express in 1991.

[edit] Stations

[edit] Tokyo - Kinshichō - Chiba

See Sōbu Line (Rapid) for rapid trains.

[edit] Ochanomizu - Kinshichō - Chiba

See Chūō-Sōbu Line for local trains.

[edit] Chiba - Chōshi

For distances, connections and stops of rapid trains, see the route diagram.

Station		Location
Chiba	千葉	Chūō, Chiba, Chiba
Higashi-Chiba	東千葉
Tsuga	都賀	Wakaba, Chiba, Chiba
Yotsukaidō	四街道	Yotsukaidō, Chiba
Monoi	物井
Sakura	佐倉	Sakura, Chiba
Minami-Shisui	南酒々井	Shisui, Chiba
Enokido	榎戸	Yachimata, Chiba
Yachimata	八街
Hyūga	日向	Sanmu, Chiba
Narutō	成東
Matsuo	松尾
Yokoshiba	横芝	Yokoshiba, Chiba
Iigura	飯倉	Yōkaichiba, Chiba
Yōkaichiba	八日市場
Higata	干潟	Asahi, Chiba
Asahi	旭
Iioka	飯岡
Kurahashi	倉橋
Saruda	猿田	Chōshi, Chiba
Matsugishi	松岸
Chōshi	銚子

[edit] References and footnotes

• JTB (ed.) (2008). "JTB Timetable (JTB時刻表, JTB Jikokuhyō^?)". 
• Ministry of Land, Infrastructure and Transport (ed.) (2000). Railway Directory FY Heisei 13 (平成13年度版鉄道要覧, Heisei 13 Nendo-ban Tetsudō Yōran^?) (in Japanese). Tokyo: (鉄道図書刊行会, ^? Tetsudōtosho Kankōkai), pp. 34, 60, 279, 292. 

1. ^ This custom is also seen in Chūō Main Line and less in Tōkaidō Main Line
2. ^ Not to cofuse with Honjō in Saitama. The locality of this article carries no long vowel.

[edit] See also

• Tōbu Noda Line, built by a company of the same name, Sōbu Railway (2nd)

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