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. The central section in Seoul City is operated by Seoul Metro with through trains to Korail's Ansan and Gwacheon Lines. 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.

All northbound trains terminate at Danggogae, except during night time where they short-turn at various stations. Half of the southbound services short-turn at Sadang, and another half head to Oido or Ansan. Express train service stops at all stations between Danggogae and Sanbon, then at Sangnoksu, Jungang, Ansan, and all stations to Oido. The express service only operates during rush hours on weekdays.

History

1985:

April 20: Line 4 is officially opened from Sanggye to Samseon-gyo.

1993:

April 21: The line is extended northward from Sanggye to Danggogae.

1994:

April 1: The line is extended southward from Sadang to Ansan when a section of the Gwacheon Line (from Seonbawi to Indeogwon) and Namtaeryeong Station open.

2000:

July 28: The line is extended westward from Ansan to Oido.

2003

July 18: Surisan Station opens as an in-fill station on the Ansan Line section.

2010

Ansan Line AM express service is launched in the northbound direction only (starting from Ansan).

2014

September 1: Southbound PM express service is launched (terminating at Ansan).

2017

July 7: Express service is extended to Oido.

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		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 branch) Mugunghwa-ho and ITX-Saemaeul services		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		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	Seohae		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

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
• Hanyang University, ERICA Campus
• 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 1,500 V ↔ AC 25,000 V
• Ansan Depot (used for simple maintenance of Korail Class 341000 train)
• 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 341000 (ex-Korail Class 2030: 1st Batch, 2nd Batch)

See also

• Subways in South Korea
• Seoul Metropolitan Subway

References

Wikimedia Commons has media related to Seoul Subway Line 4.