Ōimachi Line
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The Ōimachi Line(大井町線, Ōimachi-sen) is a railway line in Japan operated by the private railway operator Tokyu Corporation. It extends from Ōimachi in Shinagawa, Tokyo to Mizonokuchi in Kawasaki, Kanagawa.
Stations
All-stations "Local" services are classified as blue and green. The latter runs on the express track between Futako-Tamagawa and Mizonokuchi and does not stop at Futako-Shinchi or Takatsu. Limited-stop "Express" services are also provided.
On weekends, two seven-car express trains per days are operated to/from Ōimachi and Nagatsuta on the Tokyu Den-en-toshi Line. Also, a few trains are operated through down to Saginuma in the late evenings. A few express trains during the holidays also serve from Chūō-Rinkan in the mornings, down in the evenings.[citation needed]
Rolling stock
Local services
- 6020 series five-car EMUs (from July 2025)
- 9000 series five-car EMUs
- 9020 series five-car EMUs
- A 9000 series EMU in December 2021
- A 9020 series EMU in December 2021
- A 5-car 6020 series EMU in August 2025
Express services
- 6000 series seven-car EMUs (since March 2008, originally delivered as six-car sets)
- 6020 series seven-car EMUs (from March 2018)
- A 6000 series EMU in March 2018
- A 6020 series EMU in December 2018
Former rolling stock
History
- 6 July 1927: The section between Ōimachi and Ōokayama was opened by the Meguro-Kamata Electric Railway(目黒蒲田電鉄).
- 1 November 1929: The section between Jiyūgaoka and Futako-tamagawa was opened by the Meguro-Kamata Electric Railway.
- 25 December 1929: The section between Ōokayama and Jiyūgaoka was opened by Meguro-Kamata Electric Railway.
- 29 June 1938: The Meguro-Kamata Railway was absorbed into the Tokyo-Yokohama Electric Railway(東京横浜電鉄).
- 15 January 1958: Electric supply was raised to 1,500 V DC.
- 11 October 1963: The line was renamed the Den-en-toshi Line, together with the section south of Futako-tamagawa.
- 16 November 1977: Through running started between Shibuya and Nagatsuta.
- 12 August 1979: The line was renamed the Ōimachi Line and separated from the Den-en-toshi Line south of Futako-tamagawa.
- 23 February 2008: ATS was replaced by ATC.
- 28 March 2008: Express services started.
- 11 July 2009: The Ōimachi Line was extended to Mizonokuchi from Futako-tamagawa.
Express services on the line were lengthened from six to seven cars in late fiscal 2017, and the platforms at Ōimachi, Hatanodai, and Jiyūgaoka were lengthened to handle the longer trains. Since December 2018, "Q Seat" reserved seating has been implemented on some express services that run between Ōimachi and Nagatsuta stations.
- 80周年を迎え進化する東急大井町線-その1-. Japan Railfan Magazine (in Japanese): 118–125. July 2008.