Seoul Subway Line 4

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.

Line 4
Overview
Native name4호선(四號線)
Sa Hoseon
StatusOperational
TerminiDanggogae
Oido
Stations48
26-Seoul Metro
22-Korail
Service
TypeRapid transit
SystemSeoul Metropolitan Subway
Operator(s)Seoul Metro & Korail
History
Opened20 April 1985 (1985-04-20)
Technical
Line length72.1 km (44.8 mi)
31.7 km (19.7 mi) Seoul Metro[1]
40.4 km (25.1 mi) Korail[2]
Number of tracks2
Electrification1,500 V DC & 25 kV AC (60 Hz)

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, Choji, Ansan, Jeongwang, and 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). Trains stopped at Jungang, Sangnoksu, and Sanbon, before continuing local up to Danggogae.

2014

September 1: Southbound PM express service is launched (terminating at Ansan). Trains make the same stops as their AM express service counterparts.

2017

July 7: Express service is extended to Oido. In addition to the stops they made before, trains make all stops between Ansan and Oido.

2020

September 12: Express service is modified, with trains now stopping at Choji but skipping Singiloncheon.

Future

The Transportation and Construction Committee of the National Assembly approved an extension from the northern end of Line 4 (Danggogae) to Jinjeop, Namyangju. Construction began on December 10, 2014 and is expected to be completed in May 2021.[3] In addition, express services will start skipping various stations north of Sanbon station by 2023 to cut travels times.[4]

Stations

Express trains stop at stations marked "●" and pass stations marked "|".

Station
Number
Station Name
English
Station Name
Hangul
Station Name
Hanja
EX
Transfer
Line Name
Distance
in km
Total
Distance
Location
405
Jinjeop (December 2021) 진접 榛接 No service
Jinjeop Line
Gyeonggi-do
Namyangju
406
Onam (December 2021) 오남 梧南
407
Pungyang (TBD) 풍양 豊壤
408
Byeollae Byeolgaram (December 2021) 별내별가람 別內別가람
409
Danggogae 당고개당고개 Makes all stops
Line 4
---
0.0
Seoul
Nowon-gu
410
Sanggye 상계
1.2
1.2
411
Nowon 노원
1.0
2.2
412
Chang-dong 창동
1.4
3.6
Dobong-gu
413
Ssangmun 쌍문
1.3
4.9
414
Suyu
(Gangbuk-gu Office)
수유
(강북구청)

()
1.5
6.4
Gangbuk-gu
415
Mia
(Seoul Cyber University)
미아
(서울사이버대학)

(서울사이버)
1.4
7.8
416
Miasageori 미아사거리사거리
1.5
9.3
417
Gireum 길음
1.3
10.6
Seongbuk-gu
418
Sungshin Women's University
(Donam)
성신여대입구
(돈암)

()
1.4
12.0
419
Hansung University
(Samseongyo)
한성대입구
(삼선교)

()
1.0
13.0
420
Hyehwa
(Seoul Nat’l Univ. Hospital)
혜화
(서울대학교병원)
0.9
13.9
Jongno-gu
421
Dongdaemun 동대문
1.5
15.4
422
Dongdaemun History & Culture Park 동대문역사문화공원
0.7
16.7
Jung-gu
423
Chungmuro 충무로
1.3
17.4
424
Myeongdong
(Jeonghwa Arts College)
명동
(정화예술대)
0.7
18.1
425
Hoehyeon
(Namdaemun Market)
회현
(남대문시장)

()
0.7
18.8
426
Seoul Station 서울역서울驛
(Seoul Station branch)
Mugunghwa-ho and ITX-Saemaeul services
0.9
19.7
Yongsan-gu
427
Sookmyung Women's University
(Garwol)
숙대입구
(갈월)

()
1.0
20.7
428
Samgakji 삼각지
1.2
21.9
429
Sinyongsan 신용산
0.7
22.6
430
Ichon
(National Museum of Korea)
이촌
(국립중앙박물관)

()
1.3
23.9
431
Dongjak
(Seoul National Cemetery)
동작
(현충원)

()
2.7
26.6
Dongjak-gu
432
Chongshin University
(Isu)
총신대입구
(이수)

()
1.8
28.4
433
Sadang
(Daehang Hospital)
사당
(대항병원)
1.1
29.5
434
Namtaeryeong 남태령
1.6
31.1
Seocho-gu
435
Seonbawi 선바위선바위
Gwacheon Line
2.0
33.1
Gyeonggi-do
Gwacheon-si
436
Seoul Racecourse Park 경마공원
1.0
34.1
437
Seoul Grand Park
(Seoul Land)
대공원
(서울랜드)

(서울랜드)
0.9
35.0
438
Gwacheon 과천
1.0
36.0
439
Government Complex Gwacheon 정부과천청사
1.0
37.0
440
Indeogwon 인덕원
3.0
40.0
Anyang-si
441
Pyeongchon 평촌
1.6
41.6
442
Beomgye 범계범계
1.3
42.9
443
Geumjeong 금정
Ansan Line
2.6
45.5
Gunpo-si
444
Sanbon 산본
2.3
47.8
445
Surisan 수리산
1.1
48.9
446
Daeyami 대야미
2.6
51.5
447
Banwol 반월
2.0
53.5
Ansan-si
448
Sangnoksu 상록수
3.7
57.2
449
Hanyang University at Ansan 한대앞 Suin–Bundang
(shared)
1.5
58.7
450
Jungang 중앙
1.6
60.3
451
Gojan 고잔
1.4
61.7
452
Choji 초지
1.5
63.2
453
Ansan 안산
1.8
65.0
454
Neunggil 능길
2.2
67.2
455
Jeongwang 정왕
2.9
70.1
Siheung-si
456
Oido 오이도
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

Seoul Metro

Seoul Metro 4000 series
  • Seoul Metro 4000-series
    • 1st generation, DC only: 4-01~4-26 (only allowed between Danggogae & Sadang)
    • 1st generation, DC & AC: 4-51~4-71
    • 2nd generation: 4-81~4-85
      • Not yet in service.

Korail

  • Korail Class 341000 (ex-Korail Class 2030)
    • 1st generation: 341-01~341-25
    • 2nd generation: 341-26~341-30
    • 3rd generation: 341-31~341-37
      • Trains 341-31~341-34 and 341-36 are temporary running on Line 1.

Seoul Metro

  • Seoul Metro wide-width GEC chopper resister controlled electric car (1985–1993; transferred to Seoul Subway Line 3)

Korail

See also

References

  1. 지하철건설현황 [Status of Subway Construction] (in Korean). Seoul City Government. Retrieved 22 February 2014.
  2. "Metro Lines & Trains in Operation". Korail. Retrieved 25 July 2014.
  3. "4호선 연장 및 창동차량기지 이전 공동 선언식" (Korean). 연합뉴스. 17 October 2012. Retrieved 5 November 2012.
  4. http://www.joongboo.com/news/articleView.html?mod=news&act=articleView&idxno=1178955
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