Seoul Subway Line 4

Line 4
Overview
Native name	4호선（四號線） Sa Hoseon
Type	Rapid transit
System	Seoul Metropolitan Subway
Status	Operational
Termini	Danggogae Oido
Stations	48 26-Seoul Metro 22-Korail
Operation
Opened	20 April 1985 (1985-04-20)
Operator(s)	Seoul Metro & Korail
Technical
Line length	72.1 km (44.8 mi) 31.7 km (19.7 mi) Seoul Metro[1] 40.4 km (25.1 mi) Korail[2]
Number of tracks	2

Seoul Subway Line 4 (dubbed The Blue Line) of the Seoul Metropolitan Subway is a long line crossing from the southwest to the northeast across the Seoul National Capital Area. This is operated by both Korail and Seoul Metro. The southern terminus (Oido) is in Jeongwang 4-dong, Siheung City, and the northern terminus (Danggogae) is in Sanggye 4-dong, Nowon-gu, northern Seoul.

The Transportation and Construction Committee of the National Assembly has approved that the northern end of Line 4 will be extended from Danggogae to Jinjeop, Namyangju. Construction will begin in 2015 with completion date in 2019.^[3]

Stations

Station Number	Station Name English	Station Name Hangul	Station Name Hanja	Transfer	Line Name	Distance in km	Total Distance	Location
409	Danggogae	당고개	당고개		Line 4	---	0.0	Seoul	Nowon-gu
410	Sanggye	상계	上溪			1.2	1.2
411	Nowon	노원	蘆原			1.0	2.2
412	Chang-dong	창동	倉洞			1.4	3.6		Dobong-gu
413	Ssangmun	쌍문	雙門			1.3	4.9
414	Suyu (Gangbuk-gu Office)	수유 (강북구청)	水踰 (江北區廳)			1.5	6.4		Gangbuk-gu
415	Mia (Seoul Cyber University)	미아 (서울사이버대학)	彌阿 (서울사이버大學)			1.4	7.8
416	Miasageori	미아사거리	彌阿사거리			1.5	9.3
417	Gireum	길음	吉音			1.3	10.6		Seongbuk-gu
418	Sungshin Women's University (Donam)	성신여대입구 (돈암)	誠信女大入口 (敦岩)	Ui  (2016)		1.4	12.0
419	Hansung University (Samseongyo)	한성대입구 (삼선교)	漢城大入口 (三仙橋)			1.0	13.0
420	Hyehwa	혜화	惠化			0.9	13.9		Jongno-gu
421	Dongdaemun	동대문	東大門			1.5	15.4
422	Dongdaemun History & Culture Park	동대문역사문화공원	東大門歷史文化公園			0.7	16.7		Jung-gu
423	Chungmuro	충무로	忠武路			1.3	17.4
424	Myeong-dong	명동	明洞			0.7	18.1
425	Hoehyeon (Namdaemun Market)	회현 (남대문시장)	會賢 (南大門市場)			0.7	18.8
426	Seoul Station	서울역	서울驛	Gyeongui–​Jungang  (Seoul Station brach) Gyeongbu HSR Gyeongbu Gyeongbu		0.9	19.7		Yongsan-gu
427	Sookmyung Women's University (Garwol)	숙대입구 (갈월)	淑大入口 (葛月)			1.0	20.7
428	Samgakji	삼각지	三角地			1.2	21.9
429	Sinyongsan	신용산	新龍山			0.7	22.6
430	Ichon (National Museum of Korea)	이촌 (국립중앙박물관)	二村 (國立中央博物館)	Gyeongui–​Jungang   Shinbundang  (2018)		1.3	23.9
431	Dongjak (Seoul National Cemetery)	동작 (현충원)	銅雀 (顯忠院)			2.7	26.6		Dongjak-gu
432	Chongshin University (Isu)	총신대입구 (이수)	總神大入口 (梨水)	(Isu)		1.8	28.4
433	Sadang	사당	舍堂			1.1	29.5
434	Namtaeryeong	남태령	南泰嶺			1.6	31.1		Seocho-gu
435	Seonbawi	선바위	선바위		Gwacheon Line	2.0	33.1	Gyeonggi-do	Gwacheon-si
436	Seoul Racecourse Park	경마공원	競馬公園			1.0	34.1
437	Seoul Grand Park	대공원	大公園			0.9	35.0
438	Gwacheon	과천	果川			1.0	36.0
439	Government Complex Gwacheon	정부과천청사	政府果川廳舍			1.0	37.0
440	Indeogwon	인덕원	仁德院			3.0	40.0		Anyang-si
441	Pyeongchon	평촌	坪村			1.6	41.6
442	Beomgye	범계	범계			1.3	42.9
443	Geumjeong	금정	衿井		Ansan Line	2.6	45.5		Gunpo-si
444	Sanbon	산본	山本			2.3	47.8
445	Surisan	수리산	修理山			1.1	48.9
446	Daeyami	대야미	大夜味			2.6	51.5
447	Banwol	반월	半月			2.0	53.5		Ansan-si
448	Sangnoksu	상록수	常綠樹			3.7	57.2
449	Hanyang University at Ansan	한대앞	漢大앞			1.5	58.7
450	Jungang	중앙	中央			1.6	60.3
451	Gojan	고잔	古棧			1.4	61.7
452	Choji	초지	草芝	Sosa–Wonsi (2016)		1.5	63.2
453	Ansan	안산	安山			1.8	65.0
454	Singil Oncheon	신길온천	新吉溫泉			2.2	67.2
455	Jeongwang	정왕	正往			2.9	70.1		Siheung-si
456	Oido	오이도	烏耳島	Suin		1.4	71.5

Extension

Several stations will be added from Danggogae Station. Construction is set to begin in 2015 with a completion target of 2019.

Depots, junctions, and points of interest

(from Danggogae to Oido)

• Turnback siding (underground) after Danggogae Station
• Changdong Depot (used for Seoul Metro class 4000)
• Connecting track to Line 3 before Chungmuro Station
• Dongjak Bridge
• Chongshin Univ. - Sadang scissors crossover
• Turnback siding (underground) after Sadang Station
• Namtaeryong - Seonbawi track crossing point (flying crossover, switch from right to left-hand traffic, or vice versa)
  • The voltage/current switches between DC 1,500V ↔ AC 25,000V
• Ansan Depot (used for simple maintenance of Korail Class 341000train )
• Siheung Depot (used for Korail Class 341000 maintenance and also for heavy maintenance of Korail Class 311000 trains operated on Line 1)
• The largest scale of shell mounds in the South Korean west coast in Oido

Rolling stock

Current

Seoul Metro

Seoul Metro 4000 series

• Seoul Metro 4000 series
  • MELCO VVVF-GTO inverter controlled electric car (fleet No. 401~409, 452~463)
  • GEC-Alsthom VVVF-GTO inverter controlled electric car (fleet No. 410~426, 464, 465, 468, 469)
  • Toshiba VVVF-IGBT inverter controlled electric car (fleet No. 466~467, 470~471)
  • Dawonsys VVVF-IGBT inverter controlled electric car (fleet No. 451)

Korail

• Korail Class 341 (ex-Korail Class 2030: 1st Batch, 2nd Batch)

Former

Seoul Metro

• Seoul Metro 4000 series
  • Wide-width GEC Chopper resister controlled electric car (from 1985-1993, temporary, built for Seoul Subway Line 3)

Korail

• Korail Class 1000 (Ansan Line only)

See also

• Subways in South Korea
• Seoul Metropolitan Subway

References

Wikimedia Commons has media related to Seoul Subway Line 4.

Korail lines
KTX	Gyeongbu HSR Honam HSR Suseo HSR
Main	Gyeongbu Gyeongjeon Honam Jungang
Regional	Chungbuk Daegu Donghae Donghae Nambu Gwangju Gyeongbuk Gyeongui Gyeongwon Janghang Jeolla Jinhae Taebaek Yeongdong Seohae (u/c) Gyeonggang Line (u/c)
Urban/Rapid	● Bundang ● Gyeongchun Mangu ● Gyeongui–Jungang Yongsan ● Seoul Line 1 Byeongjeom Gyeongin ● Seoul Line 3 Ilsan ● Seoul Line 4 Ansan Gwacheon ● Suin Bujeon–Masan (u/c) Byeollae (u/c) Daegok–Sosa (u/c) Donghae Nambu (u/c) Hanam (u/c) Indeogwon–Suwon (u/c) Jinjeop (u/c) Sinansan (u/c) Sosa–Wonsi (u/c) Gyeonggang (u/c)

Rapid transit in South Korea
Seoul Capital Area	Urban Seoul ● Line 1 ● Line 2 ● Line 3 ● Line 4 ● Line 5 ● Line 6 ● Line 7 ● Line 8 ● Line 9 Incheon ● Line 1 ● Line 2 ○ Line 3 (planned) Metropolitan ● Line 1 [Korail] ● Line 3 [Korail] ● Line 4 [Korail] ● Gyeongui–Jungang Line [K1/K3] ● Gyeongchun Line [P1] ● Suin Line [K2] ● Bundang Line [K2] ● Gyeonggang Line [K4] ● AREX ● Shinbundang Line [DX Line] ○ Sosa–Wonsi Line (u/c) Light Metro ● U Line ● Everline ○ Ui-Sinseol Line (u/c) ○ Gimpo Goldline (u/c) Maglev and Monorail ● Incheon Airport Maglev  ○ Wolmi Monorail (u/c)
Busan	Urban ● Line 1 ● Line 2 ● Line 3 ● Line 4 ● Line 5 (u/c) Metropolitan ● Donghae Nambu Line (u/c) Light Metro ● Busan–Gimhae LRT
Daegu	● Line 1 ● Line 2 ● Line 3
Daejeon	● Line 1 ● Line 2 (planned)
Gwangju	● Line 1