Seoul Subway Line 4 Explained

Box Width:22em
Line 4
Native Name:
Sa Hoseon
Type:Rapid transit
System:Seoul Metropolitan Subway
Status:Operational
Start:Jinjeop
End:Oido
Stations:51
26-Seoul Metro
22-Korail
03-Namyangju City Urban Corporation
Operator:Seoul Metro, Korail, Namyangju City Urban Corporation
Linelength:85.7km (53.3miles)
45.3km (28.1miles) [1]
40.4km (25.1miles) [2]
Tracks:2
Electrification:1,500 V DC (Jinjeop to Namtaeryeong)
25 kV AC at 60 Hz (Seonbawi to Oido)
Speed Km/H:100
Map State:collapsed

Seoul Subway Line 4 (dubbed The Light 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 some trains offering through service to Korail's Ansan and Gwacheon Lines.[3] The southern terminus (Oido) is in Jeongwang 4-dong, Siheung City, and the northern terminus (Jinjeop) is in Jinjeop-eup, Namyangju-si, Gyeonggi-do; the newly built northern section (officially called the Jinjeop Line) is correspondingly owned by a company owned by Namyangju-si, with operations contracted to Seoul Metro. In 2022, the Seoul Metro operated section (excluding the Jinjeop Line) had an annual ridership of 219,587,000 or about 601,608 passengers per day.[4]

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:

20 April: Line 4 is officially opened from Sanggye to Sadang.[5]

1993:

21 April: The line is extended northward from Sanggye to Danggogae, and southward from Sadang to Namtaeryeong.

1994:

1 April: 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:

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

2003

18 July: 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

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

2017

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

2020

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

2022:

19 March: The Jinjeop Line, a northward extension of Line 4, opens from Danggogae to Jinjeop.[6]

Future

Express services are planned to start skipping various stations north of Sanbon station by 2023 to cut travel times.[7]

Stations

Station
Number		Station Name
Station Name
Station Name
EXTransferLine NameDistance
Total
Distance		Location
Jinjeop
(Kyungbok University)		Korean: [[:ko:진접역|진접]] <br><small>([[:ko:진접역|경복대]])</small>
OnamKorean: [[:ko:오남역|오남]]
Pungyang (2026)풍양
ByeollaeByeolgaramKorean: [[:ko:별내별가람역|별내별가람]] 별가람
DanggogaeKorean: [[:ko:당고개역|당고개]] 당고개Makes all stops
SanggyeKorean: [[:ko:상계역|상계]]
NowonKorean: [[:ko:노원역|노원]]
Chang-dongKorean: [[:ko:창동역|창동]]
SsangmunKorean: [[:ko:쌍문역|쌍문]]
Suyu
(Gangbuk-gu Office)		Korean: [[:ko:수유역|수유]] <br /><small>([[:ko:수유역|강북구청]])</small>
Mia
(Seoul Cyber Univ.)		Korean: [[:ko:미아역|미아]] <br /><small>([[:ko:미아역|서울사이버대학]])</small>
MiasageoriKorean: [[:ko:미아사거리역|미아사거리]] 사거리
GireumKorean: [[:ko:길음역|길음]]
Sungshin Women's Univ.
(Donam)		Korean: [[:ko:성신여대입구역|성신여대입구]] <br /><small>([[:ko:성신여대입구역|돈암]])</small>
Hansung Univ.
(Samseongyo)		Korean: [[:ko:한성대입구역|한성대입구]] <br /><small>([[:ko:한성대입구역|삼선교]])</small>
Hyehwa
(Seoul Nat’l Univ. Hospital)		Korean: [[:ko:혜화역|혜화]] <br /><small>([[:ko:혜화역|서울대학교병원]])</small>
DongdaemunKorean: [[:ko:동대문역|동대문]]
Dongdaemun History & Culture Park
(DDP)		Korean: [[:ko:동대문역사문화공원역|동대문역사문화공원]] <br /><small>([[:ko:동대문역사문화공원역|DDP]])</small>
ChungmuroKorean: [[:ko:충무로역|충무로]]
Myeong-dong
(Woori Financial Town)		Korean: [[:ko:명동역|명동]] <br /><small>([[:ko:명동역|우리금융타운]])</small>
Hoehyeon
(Namdaemun Market)		Korean: [[:ko:회현역|회현]] <br /><small>([[:ko:회현역|남대문시장]])</small>
Seoul StationKorean: [[:ko:서울역|서울역]] 서울驛
(Seoul Station branch)
Mugunghwa-ho and ITX-Saemaeul services
Sookmyung Women's Univ.
(Garwol)		Korean: [[:ko:숙대입구역|숙대입구]] <br /><small>([[:ko:숙대입구역|갈월]])</small>
SamgakjiKorean: [[:ko:삼각지역|삼각지]]
Sinyongsan
(AMOREPACIFIC)		Korean: [[:ko:신용산역|신용산]] <br /><small>([[:ko:신용산역|아모레퍼시픽]])</small>
Ichon
(National Museum of Korea)		Korean: [[:ko:이촌역|이촌]] <br /><small>([[:ko:이촌역|국립중앙박물관]])</small>
Dongjak
(Seoul National Cemetery)		Korean: [[:ko:동작역|동작]] <br /><small>([[:ko:동작역|현충원]])</small>
Chongshin Univ.
(Isu)		Korean: [[:ko:이수역|총신대입구]]<br><small>([[:ko:이수역|이수]])</small>
SadangKorean: [[:ko:사당역|사당]]
NamtaeryeongKorean: [[:ko:남태령역|남태령]]
SeonbawiKorean: [[:ko:선바위역|선바위]] 선바위
Seoul Racecourse ParkKorean: [[:ko:경마공원역|경마공원]]
Seoul Grand Park
(Seoul Land)		Korean: [[:ko:대공원역 (과천)|대공원]] <br /><small>([[:ko:대공원역|서울랜드]])</small>
GwacheonKorean: [[:ko:과천역|과천]]
Government Complex GwacheonKorean: [[:ko:정부과천청사역|정부과천청사]]
IndeogwonKorean: [[:ko:인덕원역|인덕원]]
Pyeongchon
(Hallym Univ. Sacred Heart Hospital)		Korean: [[:ko:평촌역|평촌]] <br /><small>([[:ko:평촌역|한림대성심병원]])</small>
BeomgyeKorean: [[:ko:범계역|범계]] 범계
GeumjeongKorean: [[:ko:금정역|금정]]
Sanbon
(Wonkwang Univ. Sanbon Hospital)		Korean: [[:ko:산본역|산본]] <br /><small>([[:ko:산본역|원광대산본병원]])</small> ●
SurisanKorean: [[:ko:수리산역|수리산]] |

| colspan="3"|| | |-| | Daeyami| Korean: [[:ko:대야미역|대야미]] || |

|
BanwolKorean: [[:ko:반월역|반월]] |

| colspan="3"|| | | rowspan="8" | |-| | Sangnoksu
(Ansan Univ.)| Korean: [[:ko:상록수역|상록수]] <br /><small>([[:ko:상록수역|안산대학교]])</small> || |

●

| colspan="3"|| | |-| | Hanyang Univ. at Ansan| Korean: [[:ko:한대앞역|한대앞]]|| 앞|

|		Suin–Bundang
Jungang
(Seoul Institute of the Arts)		Korean: [[:ko:중앙역 (안산)|중앙]] <br /><small>([[:ko:중앙역 (안산)|서울예술대]])</small>●
Gojan
(Korea Univ. Ansan Hospital)		Korean: [[:ko:고잔역|고잔]] <br /><small>([[:ko:고잔역|고대안산병원]])</small>|

|| | |-| | Choji
(Shin Ansan Univ.)| Korean: [[:ko:초지역|초지]] <br /><small>([[:ko:초지역|신안산대]])</small>|| |

●

| | | |-| | Ansan| Korean: [[:ko:안산역|안산]]|| |

●

|| | |-| | Singiloncheon| Korean: [[:ko:신길온천역|신길온천]]|| |

|

|| | |-| | Jeongwang
(Tech Univ. of Korea)| Korean: [[:ko:정왕역|정왕]] <br /><small>([[:ko:정왕역|한국공학대]])</small>|| |

●

|| | | rowspan="2" | |-| | Oido| Korean: [[:ko:오이도역|오이도]]|| |

●

| | | |- style="background:#; height: 2pt"| colspan="13" ||-|}

Depots, junctions, and points of interest

(from Jinjeop to Oido)

  • Jinjeop Depot (opening December 2024, will replace Changdong Depot for Seoul Metro-operated rolling stock)
  • Turnback siding (underground) after Danggogae Station
  • Changdong Depot (used for Seoul Metro class 4000, with non-revenue connection to Line 1)
  • Non-revenue 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
  • Non-revenue crossover to Line 1 after Geumjeong Station
  • Non-revenue connecting track to Seohae Line before Choji Station
  • 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
    • 1st generation, DC only: 4-01~4-26 (Restricted to Jinjeop-Sadang)(Retirement in Progress)
    • 1st generation, DC & AC: 4-51~4-71 (Retirement in Progress)
    • 2nd generation: 4-81~4-85
    • 3rd generation: 4-50~4-70
    • 4th generation: 4-01~4-26

Korail

  • Korail Class 341000 (ex-Korail Class 2030)
    • 2nd generation: 341-26~341-30
    • 3rd generation: 341-31~341-37
    • 4th generation: 341-38~341-60
      • Trains 341-53~341-55 are temporary running on Line 1.

Former

Seoul Metro

  • Seoul Metro 3000 series (former 4000 series)

Korail

See also

Notes

a. One of only two subway directional crossovers in revenue service in the world, the other one located between Ho Man Tin station and To Kwa Wan station of the Tuen Ma line in Hong Kong.

External links

]

Notes and References

  1. Web site: http://infra.seoul.go.kr/archives/1092 . ko:지하철건설현황 . Seoul City Government . ko . Status of Subway Construction . 2014-02-22 . 3 January 2016 . https://web.archive.org/web/20160103184202/http://infra.seoul.go.kr/archives/1092 . dead .
  2. Web site: Metro Lines & Trains in Operation. Korail. 2014-07-25.
  3. Web site: 서울교통공사 블로그 : 네이버 블로그. 2021-05-31. blog.naver.com.
  4. Web site: 서울시 지하철수송 통계. 2022-07-19. data.seoul.go.kr. ko.
  5. Web site: 개요 및 연혁 . Overview and History . live . https://web.archive.org/web/20240205120552/http://www.seoulmetro.co.kr/kr/page.do?menuIdx=512 . 5 February 2024 . 12 July 2024 . seoulmetro.co.kr . ko.
  6. Web site: EzPDF WebViewer.
  7. Web site: 4호선 금정~사당 급행열차 추진된다. 11 July 2017. 중부일보 – 경기·인천의 든든한 친구.

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