Chūō Line (Osaka)

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Chūō Line
Chuo Line Logo.svg
Chūō Line 20 series EMU
Type Rapid transit
System Osaka Municipal Subway
Locale Osaka and Higashiosaka
Termini Cosmosquare
Stations 14
Line number 4
Opened December 11, 1961
Owner Osaka Municipal Transportation Bureau (Osakako — Nagata)
Osaka Port Transport System Co., Ltd. (Cosmosquare — Osakako)
Operator(s) Osaka Municipal Transportation Bureau
Depot(s) Morinomiya
Line length 17.9 km (11.1 mi)
Track gauge 1,435 mm (4 ft 8 12 in)
Electrification 750 V DC, third rail
Operating speed 70 km/h (43 mph)
Route map
New Chuo line.png

The Chūō Line (大阪市営地下鉄中央線 Ōsaka-shiei-chikatetsu Chūō-sen?) is a rapid transit system in Osaka, Japan, operated by the Osaka Municipal Subway. The line runs east-westerly under Chūō Avenue (中央大通 Chūō Ōdōri?). Its official name is Rapid Electric Tramway Line No. 4 (高速電気軌道第4号線?), while the Osaka Municipal Transportation Bureau refers to it as Osaka City Rapid Railway Line No. 4 (大阪市高速鉄道第4号線?), and in MLIT publications, it is written as Line No. 4 (Chūō Line) (4号線(中央線)?). Station numbers are indicated by the letter C.

Together with the through operation to the Keihanna Line, the two lines have a unified nickname "Yumehanna" (ゆめはんな?).

On July 1, 2005, Osaka City bought the Technoport Line (テクノポート線?) from Cosmosquare to Osakakō of its subsidiary Osaka Port Transport System Co., Ltd. (大阪港トランスポートシステム?), reducing fare to increase traffic. The section became a part of the Chūō Line, however is still owned by OTS.

The Chūō Line is the only line to connect to all other railway lines operated by the Osaka Municipal Transportation Bureau, including the Nankō Port Town Line.

Line data[edit]


No. Station Japanese Distance (km) Transfers Location
C10 Cosmosquare コスモスクエア 0.0 Newtram logo.png Nankō Port Town Line (P09) Suminoe-ku, Osaka
C11 Ōsakakō
2.4 Minato-ku, Osaka
C12 Asashiobashi 朝潮橋 3.9
C13 Bentenchō 弁天町 5.5 JR West: Osaka Loop Line
C14 Kujō 九条 6.8 Hanshin: Namba Line Nishi-ku, Osaka
C15 Awaza 阿波座 8.3 Sennichimae Line Logo.svg Sennichimae Line (S13)
C16 Hommachi
9.4 Chūō-ku, Osaka
C17 Sakaisuji-Hommachi
10.1 Sakaisuji Line Logo.svg Sakaisuji Line (K15)
C18 Tanimachi Yonchōme 谷町四丁目 11.1 Tanimachi Line Logo.svg Tanimachi Line (T23)
C19 Morinomiya 森ノ宮 12.4
C20 Midoribashi 緑橋 13.6 Imazatosuji Line Logo.svg Imazatosuji Line (I20) Higashinari-ku, Osaka
C21 Fukaebashi 深江橋 14.7
C22 Takaida 高井田 16.1 JR West: Osaka Higashi Line - Takaida-Chuo Higashiosaka
C23 Nagata 長田 17.9 Keihanna Line
Through-service to/from Gakken Nara-Tomigaoka Station via the Keihanna Line

Rolling stock[edit]

Osaka Municipal Subway[edit]


The Osaka Municipal Subway trains are based at Morinomiya Depot, while the Kintetsu trains are based at Higashi-Hanazono and Tomigaoka Depots located on the Keihanna Line.



The line opened on December 11, 1961, initially running between Ōsakakō and Bentenchō (this was the first elevated portion of the Osaka subway system); trains were initially composed of one car.[1] Between 1964 and 1985, the line was expanded towards Nagata in four stages:

  • October 31, 1964: Section between Bentenchō and Hommachi opens, with intermediate stations at Kujo and Awaza.
  • September 30, 1967: The section between Tanimachi 4-chome and Morinomiya opens as a shuttle service with 2-car trains.
  • July 29, 1968: The section of the shuttle service between Morinomiya and Fukaebashi opens.
  • December 6, 1969: The section between Hommachi and Tanimachi 4-chome (including Sakaisuji-Hommachi) opens after construction delays; the shuttle service between Tanimachi 4-chome and Fukaebashi was absorbed into the line, which was now named the Chūō Line. 4-car trains begin operation.
  • April 5, 1985: The section between Fukaebashi and Nagata opens. 6-car trains begin operation.
  • October 1, 1986: Through service to Ikoma commences upon the opening of the Kintetsu Keihanna Line (then named the Higashiosaka Line).

On December 18, 1997, the OTS Technoport Line opened between Ōsakakō and Cosmosquare. This line was absorbed into the Chūō Line on July 1, 2005. The Keihanna Line was extended further into Nara when the extension to Gakken Nara-Tomigaoka opened on March 27, 2006.


  1. ^ Terada, Hirokazu (July 2002). データブック日本の私鉄 [Databook: Japan's Private Railways]. Japan: Neko Publishing. p. 133. ISBN 4-87366-874-3.