Yotsubashi Line

Osaka Metro Yotsubashi Line
	A refurbished Yotsubashi Line 23 series EMU in August 2012
Overview
Owner	Osaka Metro (2018–present) ; Osaka Municipal Transportation Bureau (1942–2018)
Line number	3
Locale	Osaka, Japan
Termini	Nishi-Umeda; Suminoekōen
Stations	11
Service
Type	Rapid transit
System	Osaka Metro
Depot(s)	Midorigi, Morinomiya (located on Chuo Line)
Rolling stock	23 series EMUs
History
Opened	May 10, 1942
Technical
Line length	11.4 km (7.1 mi)
Track gauge	1,435 mm (4 ft 8 1⁄2 in)
Electrification	750 V DC, third rail
Operating speed	70 km/h (45 mph)
Route map

The Osaka Metro Yotsubashi Line (四つ橋線, Yotsubashi-sen) is an underground rapid transit line in Osaka, Japan, operated by Osaka Metro. The line connects Umeda, Hommachi, Yotsubashi, Namba, Daikokuchō and Suminoe, and runs parallel to the Midōsuji Line from Daikokuchō to Nishi-Umeda. Its official name is Rapid Electric Tramway Line No. 3 (高速電気軌道第3号線), while the Osaka Municipal Transportation Bureau refers to it as Osaka City Rapid Railway Line No. 3 (大阪市高速鉄道第3号線), and in MLIT publications, it is written as Line No. 3 (Yotsubashi Line) (3号線（四つ橋線）). Station numbers are indicated by the letter Y.[1]

Overview

The Yotsubashi Line runs in a north and south direction. connecting the Osaka Metro Nankō Port Town Line at Suminoekōen Station. At first, it was a branch of the Osaka Metro Midōsuji Line, branching off at Daikokuchō Station but was extended north to Nishi-Umeda Station and made a separate line. This new section of the Yotsubashi Line takes a more direct routing to Nishi-Umeda running only 300-400m east of the Midosuji Line.

Operations

Most trains are driving between Nishi-Umeda station-Suminoe-Koen Station, 2–3 minutes interval during the morning rush hour, 6–7.5 minutes interval during the day, 3–4 minutes intervals at night, 5–10 minutes nightly, early morning and midnight is about 10 minutes interval. During the rush hour in the morning and evening (Saturdays and holidays only), the train between Kita-Kagaya station and Nishi Umeda Station, which leads to the North Kagaya station, which is connected to the green tree Ching of the vehicle base, is also driven.

In addition, on the day of the Suminoe racing Night event, one special train will be issuance at 9pm.

The connection with the new tram is considered basically at Suminoe Park station. On March 23, 2013, the Osaka Municipal Subway line with the Sakai Muscle Line was revised to perform the timetable revision, the four-bridge lines to take advantage of the train that had been driving forward to the garage after the last train, the last train of up trains is 20 minutes, The last train for the downlink was 10 minutes (to Suminoe Park) and 26 minutes (North Kagaya), respectively.

Also, according to the actual use, the interval of 5 minutes between 10 a.m.-12 o'clock on weekdays, to every 6 minutes, the 5–6 minutes interval of 10 o'clock-15 o'clock on Saturdays and holidays, respectively, was changed to 7–7.5 minutes interval. Since 2016, the regular inspection of the vehicle of the third rail line of Osaka Metro has been carried out in the Green wood Ching field, the vehicle of Midosuji Line, Tanimachi Line, Chuo Line, and Sennichimae line may travel four bridge lines in the forward.

Stations

No.	Distance (km)	Station	Japanese	Connections	Location
Y11	0.0	Nishi-Umeda	西梅田	Midōsuji Line – Umeda (M16) Tanimachi Line – Higashi-Umeda (T20) JR West Tokaido Line (JR Kyoto Line, JR Kobe Line, JR Takarazuka Line) – Osaka Osaka Loop Line – Osaka JR Tōzai Line – Kitashinchi Hankyu Railway – Osaka-umeda Kobe Line Takarazuka Line Kyoto Line Hanshin Railway: Main Line – Osaka-Umeda	Kita-ku, Osaka
Y12	0.9	Higobashi	肥後橋	Keihan Nakanoshima Line – Watanabebashi	Nishi-ku, Osaka
Y13	1.9	Hommachi	本町	Chūō Line (C16) Midōsuji Line (M18)
Y14	2.9	Yotsubashi	四ツ橋	Nagahori Tsurumi-ryokuchi Line – Shinsaibashi (N15) Midōsuji Line – Shinsaibashi (M19)
Y15	3.7	Namba	難波・なんば	Sennichimae Line (S16) Midōsuji Line (M20) Nankai Railway Nankai Main Line Kōya Line Kintetsu: Namba Line – Ōsaka Namba Hanshin: Hanshin Namba Line – Ōsaka Namba JR West Kansai Line (Yamatoji Line) – JR Namba	Naniwa-ku, Osaka
Y16	4.9	Daikokuchō	大国町	Midōsuji Line (M21)	Naniwa-ku, Osaka
Y17	6.2	Hanazonochō	花園町		Nishinari-ku, Osaka
Y18	7.3	Kishinosato	岸里
Y19	8.6	Tamade	玉出
Y20	9.7	Kitakagaya	北加賀屋		Suminoe-ku, Osaka
Y21	11.4	Suminoekōen	住之江公園	Nankō Port Town Line (New Tram) (P18)	Suminoe-ku, Osaka

Rolling stock

Current

23 series (since 1990)

All trains are based at Midorigi Depot. Since 2014, Yotsubashi Line trains are also able to access Morinomiya Depot located on the Chuo Line, after a connecting track was built between these two lines near Hommachi Station. Currently all trains are 6 cars long but subway platforms are long enough to accommodate trains up to 8 cars long.

Former

400 series (1942–1969)
1000 series (1956–1971)
1100 series (1958–1979)
1200 series (1958–1980)
50 series (1960–1980)
30 series (1972–1996)

History

May 10, 1942 – Daikokuchō – Hanazonochō (opening)
Construction stopped during World War II.
June 1, 1956 – Hanazonochō – Kishinosato (opening)
May 31, 1958 – Kishinosato – Tamade (opening)
October 1, 1965 – Daikokuchō – Nishi-Umeda (opening)
November 9, 1972 – Tamade – Suminoekōen (opening)

Plans

A northward extension to Jūsō Station is under review.[2]

References

四つ橋線. Osaka Kotsu (in Japanese). Osaka Municipal Transportation Bureau. Retrieved 5 August 2014.
北ヤード新線、大筋合意　大阪市地下鉄四つ橋線乗り入れ. Asahi Shimbun (in Japanese). 9 December 2006. Retrieved 5 August 2014.

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[1] 四つ橋線. Osaka Kotsu (in Japanese). Osaka Municipal Transportation Bureau. Retrieved 5 August 2014.

[北ヤード新線-2] 北ヤード新線、大筋合意　大阪市地下鉄四つ橋線乗り入れ. Asahi Shimbun (in Japanese). 9 December 2006. Retrieved 5 August 2014.