Chūō Line (Osaka)
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Chūō Line 20 series EMU
|System||Osaka Municipal Subway|
|Locale||Osaka and Higashiosaka|
|Opening||December 11, 1961|
|Owner||Osaka Municipal Transportation Bureau (Osakako — Nagata)
Osaka Port Transport System Co., Ltd. (Cosmosquare — Osakako)
|Operator(s)||Osaka Municipal Transportation Bureau|
|Line length||17.9 km (11.1 mi)|
|Track gauge||1,435 mm (4 ft 8 1⁄2 in)|
|Electrification||750 V DC, third rail|
|Operating speed||70 km/h (43 mph)|
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.
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.
- Above-ground section: after Awaza Station to Ōsakakō Station
- Block signalling: Automatic
- Train protection system: WS-ATC
- Cars per train: 6 (1984 – present)
- Maximum possible cars per train (platform length): 8
|C10||Cosmosquare||コスモスクエア||0.0||Nankō Port Town Line (P09)||Suminoe-ku, Osaka|
|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 (S13)|
|10.1||Sakaisuji Line (K15)|
|C18||Tanimachi Yonchōme||谷町四丁目||11.1||Tanimachi Line (T23)|
|C20||Midoribashi||緑橋||13.6||Imazatosuji Line (I20)||Higashinari-ku, Osaka|
|C22||Takaida||高井田||16.1||JR West: Osaka Higashi Line - Takaida-Chuo||Higashiosaka|
|C23||Nagata||長田||17.9||Kintetsu Keihanna Line (through to Gakken Nara-Tomigaoka Station)|
Osaka Municipal Subway
- 20 series (from 1984)
- 24 series (from 1991) (in green Osaka Municipal Transportation Bureau and blue Osaka Port Transport System (OTS) liveries)
The Osaka Municipal Subway trains are based at Morinomiya Depot, while the Kintetsu trains are based at Higashi-Hanazono and Tomigaoka Depots.
- 800 series (1961-1978)
- 900 series (1964-1978)
- 30 series (1967-1969, 1983-1995)
- 50 series (1969-1991)
The line opened on December 11, 1961, initially running between Ōsakakō and Bentenchō.
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