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Seibu Tamagawa Line

Coordinates: 35°40′56″N 139°31′10″E / 35.68212°N 139.51950°E / 35.68212; 139.51950
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Seibu Tamagawa Line
A Seibu Tamagawa Line train
Overview
Native name西武多摩川線
OwnerSeibu Railway
Line numberSW
LocaleTokyo
Termini
Stations6
Service
TypeCommuter rail
Rolling stockNew 101 series
History
Opened22 October 1917
Technical
Line length8.0 km (5.0 mi)
Number of tracks1
Track gauge1,067 mm (3 ft 6 in)
Minimum radius300 m
Electrification1,500 V DC, overhead catenary
Operating speed95 km/h (60 mph)

The Seibu Tamagawa Line (西武多摩川線, Seibu Tamagawa-sen) is an 8.0 km (5.0 mi) railway line in the western suburbs of Tokyo operated by the private railway operator Seibu Railway. The line connects Musashi-Sakai Station on the Chūō Main Line with Koremasa Station along the Tama River. The line has only six stations and is not connected to any other part of the Seibu Railway system. The only connection to any other rail line is a rarely used maintenance connection to the JR East Chūō Main Line (just west of Musashi-Sakai Station) that is used to transfer trains requiring inspection or major repairs to Seibu's Musashigaoka Vehicle Inspection and Repair Shop.

The Seibu Tamagawa Line is single-track: trains traveling in opposite directions pass each other as necessary at the stations, which are double-track. As of January 2025, during 12-minute frequency trains pass at Shin-Koganei and Shiraitodai, and during 20-minute frequency trains pass at Shiraitodai only.

Although the line is short, it provides access to the Tokyo University of Foreign Studies, the Tokyo Racecourse, the Ajinomoto Stadium, the Tokyo Metropolitan Police Department police school, many cemeteries (including Tokyo's largest, Tama Cemetery), the American School in Japan, and the Tama River.

Services

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All services on the Seibu Tamagawa Line are Local trains, stopping at all stations.[1]

As of January 2025, trains operate every 12 minutes between 06:30 and 22:00 every day, and approximately every 20 minutes in the early morning and late at night.[2][3]

Running time is 12 minutes towards Koremasa and 14 minutes towards Musashi-Sakai.[2]

Stations

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At Musashi-Sakai Station
No. Station Japanese Distance (km) Transfers Location Prefecture
SW01 Musashi-Sakai 武蔵境 0.0 JC Chūō Line (Rapid) JC13 ∨ Musashino Tokyo
SW02 Shin-Koganei 新小金井 1.9 ◇ Koganei
SW03 Tama
(Tokyo University of Foreign Studies) 		多磨
(東京外国語大学) 		4.1 ｜ Fuchū
SW04 Shiraitodai 白糸台 5.5 Keio Line (Musashinodai , Tama-reien ) ‡ ◇
SW05 Kyōteijō-mae 競艇場前 7.0 ｜
SW06 Koremasa 是政 8.0 ｜

‡ Unofficial transfer station. Both Keio Line stations are 600 m (2,000 ft), approximately 8 minute walk from Shiraitodai Station.

Rolling Stock

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Since March 2010, the line's services are operated exclusively by a fleet of 4 x 4-car New 101 Series trains. These trains are wrapped with different liveries on various occasions. At other times the New 101 Series trains typically operate in a white livery.

The train depot for the Tamagawa Line trains is adjacent to Shiraitodai Station.

Liveries

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Izu Hakone Color

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To commemorate the 100th anniversary of the opening of the Tamagawa Line from 2017 to 2018, which coincided with the 100th anniversary of the Izu Hakone Railway, the two lines celebrated by adopting each other's liveries.

Akaden painting

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By request from a questionnaire at the 100th-anniversary event of the Tamagawa Line, from January 24, 2018, Seibu Railway's old livery "Akaden Paint" (red x beige) was used.

Two-tone color

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From April 18, 2018, the trains were repainted with the two-tone color of yellow & beige. The paint color is derived from the livery that was used during the time of the debut of the New 101 series train. The livery was also used before the fleet renewal of 2010, as the Old 101 Series train was featured in the same livery. This livery was the most requested after Akaden painting in the questionnaire at the 100th-anniversary event of Tamagawa Line.

Omi Railway Color (1251 formation)

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From July 11, 2018, To commemorate the 120th anniversary of the Ohmi Railway and the 100th anniversary of the Tamagawa Line a wrapping featuring the "Mizuumifugo" (light blue) livery was introduced.

Former Rolling Stock

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Before the New 101 series, the line's services were operated by the Old 101 series (also referred to as Original 101 series), which were in use from 1996 to 2010. These trains originally were introduced as "One-Man" (ワンマン) services. Prior to the One-Man train service on the New 101 Series, the following trains were also used: 401 series & Seibu 701 series [ja], which had been transferred from the Shinjuku line system to the Tamagawa line, and the Seibu 451 series [ja], Seibu 551 series [ja], & Seibu 571 series [ja], which were called Akaden trains due to their red and beige livery.

History

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The first section of the line, between Musashi-Sakai and Kita-Tama Station (present-day Shiraitodai Station), opened on 22 October 1917.[4] The line was extended to Koremasa on 20 June 1922.[4] In 1927, the company was absorbed by the Seibu Railway.[citation needed] The entire line was electrified in 1950. Freight operations ceased in 1967.[citation needed]

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  • Track arrangement at Musashi-Sakai Station. Shows connecting track to JR East Chuo Main Line
    Track arrangement at Musashi-Sakai Station. Shows connecting track to JR East Chuo Main Line
  • Cherry blossoms on Seibu Tamagawa Line at Nogawa
    Cherry blossoms on Seibu Tamagawa Line at Nogawa
  • Seibu 101 Series 241F
    Seibu 101 Series 241F
  • Seibu 101 Series 1247F
    Seibu 101 Series 1247F
  • Seibu 101 series 1254
    Seibu 101 series 1254

References

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This article incorporates material from the corresponding article in the Japanese Wikipedia.

  1. ^ "SEIBU RAILWAY". SEIBU RAILWAY. Retrieved 2025-01-23.
  2. ^ a b "武蔵境駅（西武多摩川線 是政方面）の時刻表". ジョルダン (in Japanese). Retrieved 2025-01-23.
  3. ^ "是政の時刻表 - 西武鉄道Webサイト". seibu.ekitan.com (in Japanese). Retrieved 2025-01-23.
  4. ^ a b Terada, Hirokazu (19 January 2013). データブック日本の私鉄 [Databook: Japan's Private Railways]. Japan: Neko Publishing. p. 227. ISBN 978-4-7770-1336-4.
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35°40′56″N 139°31′10″E / 35.68212°N 139.51950°E / 35.68212; 139.51950

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