Seoul Subway Line 1 Explained

Box Width:	22em
Line 1
Native Name:	Il Hoseon
Type:	Rapid transit / Commuter Rail
System:	Seoul Metropolitan Subway
Status:	Operational
Locale:	Seoul Capital Area
Start:	Yeoncheon
End:	Incheon / Sinchang / Gwangmyeong / Seodongtan
Stations:	102 Seoul Metro: 10 Korail: 92
Routes:	Local: Yeoncheon / Soyosan / Dongducheon ↔ Incheon, Kwangwoon U ↔ Seodongtan / Cheonan / Sinchang, Yeongdeungpo ↔ Gwangmyeong Express: Cheongnyangni ↔ Cheonan / Sinchang, Dongducheon ↔ Incheon (AM Rush & off-peak weekdays), Yongsan ↔ Dongincheon, Seoul Station ↔ Cheonan/Sinchang (weekday RH, peak direction only)
Open:	August 15, 1974
Owner:	Seoul Special City, South Korean Government
Operator:	Seoul Metro, Korail
Linelength:	218.3km (135.6miles) Seoul Metro: 7.8km (04.8miles) Korail: 210.5km (130.8miles)
Linenumber:	1
Electrification:	1,500 V DC (Seoul Metro section) 25 kV AC at 60 Hz (Korail section)
Speed:	110km/h
Map State:	collapsed

Seoul Subway Line 1 (dubbed The Dark Blue Line) of the Seoul Metropolitan Subway is a rapid transit and commuter rail line which links central Seoul, South Korea to Yeoncheon in the northeast, Incheon in the southwest, and Sinchang via Suwon and Cheonan in the south. The central underground portion of Line 1, running underneath Sejongno, Jongno, and Wangsan-ro avenues along Seoul's traditional downtown area, is the oldest subway-operated section in the Seoul Metropolitan Subway system. Its branches and services cover a large part of the Seoul Capital Area; totaling in route length.

The underground section between Seoul Station and Cheongnyangni station, which is referred to as Seoul Metro Line 1 (7.8km (04.8miles)) after its operator, is currently operated by Seoul Metro, and is electrified at the subway standard of 1.5 kV DC.^[1] ^[2] The line first opened in 1974 as the Korean National Railroad of Seoul with through services to newly-electrified (at the mainline KNR standard of 25 kV AC 60 Hz) national mainline railways from Seongbuk station (now: Kwangwoon University station) to Incheon and Suwon Stations.^[3] This was the first electrified rapid transit line and service in South Korea and the second in the Korean Peninsula after the Pyongyang Metro in North Korea opened the year before.

Frequent service is provided between Soyosan, Dongducheon, Uijeongbu, Cheongnyangni, Seoul, Yongsan, and Guro, where trains split between Incheon in the west and Byeongjeom and Cheonan in the south. Express trains operate from Yongsan and Seoul stations to Dongincheon and Sinchang stations. Trains run every 3-6 min in the central route between Seoul Station and Cheongnyangni, every 6-9 min between Seoul and Guro, every 8-10 min between Guro and Incheon and between Guro and Byeongjeom, every 10-15 min from Byeongjeom to Cheonan, and every 35 min between Cheonan and Sinchang and service up to the Dongducheon area and Soyosan station.

Service to Yeoncheon is approximately once per hour, limited due to the single track section approaching Soyosan station. This service is meant to be the replacement for the Gyeongwon line commuter trains, which began at Dongducheon station prior to its closure.

Trains travel along Gyeongbu (Seoul-Cheonan), Gyeongin (Guro-Incheon), Janghang (Cheonan-Sinchang), and Gyeongwon (Hoegi-Yeoncheon) railway lines. The line runs on the left-hand side of the track, as opposed to the right-hand side of the track like all other Seoul Metropolitan Subway lines (another exception to this is Seoul Subway Line 4 although it runs on the right-hand side until Namtaeryeong station, and operates on the left-hand side for the parts afterwards)^[4] since railways in Korea generally run on the left side.

Rapid (Express) trains

Korail operates a variety of express "rapid" (Korean: 급행 geup-haeng, Hanja: 急行) trains for long distance commuter services on Line 1. These services include:

Gyeongin line express services from Yongsan to Dongincheon, operating express between Guro and Dongincheon, including:
- Regular express services, introduced on January 29, 1999, following quadruple-tracking of the Gyeongin Line.
- Faster limited express (Korean: 특급 teuk-geup, Hanja: 特急) trains, introduced on July 7, 2017.
Gyeongbu line express services from Cheongnyangni to Cheonan or Sinchang, operating express between Gasan Digital Complex and Cheonan and running local elsewhere.

Green Gyeongbu line express service from Seoul Station to Cheonan or Sinchang, originating at a platform adjacent to Seoul Station, skipping all stations between Seoul Station and Geumcheon-gu Office Station, making intermediate stops at Anyang, Gunpo, Uiwang, and Sungkyunkwan University, and then following the red Gyeongbu line express service pattern south of Suwon. Northbound services (departing from Cheonan/Sinchang and terminating at Seoul Station) stop at Yeongdeungpo station, but southbound services are unable to due to the lack of a raised platform. This service was introduced on September 25, 1982.^[5]

Gyeongwon line express services from Dongducheon to Incheon, operating express between Dongducheon and Kwangwoon University and running local between Incheon and Kwangwoon University.

Former express services include:

One late night Gyeongin line express service that originated at Soyosan, made all stops to Guro, then made express stops until Incheon.
Yeongdeungpo-Byeongjeom Gyeongbu line express service, skipping all stations between Yeongdeungpo and Anyang and then following the Yeongsan-Cheonan/Sinchang express service pattern south of Anyang until Byeongjeom. This service was introduced on August 25, 2014 and was discontinued on December 9, 2016.
Two faster Yongsan-Sinchang limited express trains (one in each direction), introduced in 2013. This train only operated on weekends and holidays. It was discontinued on July 1, 2018.

Electrification

Seoul Subway Line 1 is powered by 1500 V direct current on the underground tunnel segment between Cheongnyangni station and Seoul Station, and by 25000 V alternating current (60 Hertz frequency) on the rest of the line. Because of this different manner of offering electric current, there are neutral sections between Cheongnyangni station and Hoegi station, as well as between Seoul Station and Namyeong station. All Line 1 rolling stock are similarly required to be multi-system compatible with both electrification systems.

Stations

Until 2000, the 7.8km (04.8miles) underground city-center portion run by Seoul Metro Corporation—one of Seoul Metro's predecessors—was the only section properly referred to as Line 1 and labeled red on maps. On the other hand, the remaining sections of the rail line run by Korail were referred to as Korean National Railroad of Seoul and the local all-stop services labeled either blue or gray on maps, while the express services were labelled thin red. Since 2000, all adjacent through-running Korail services from the Gyeongbu, Gyeongin and Gyeongwon Lines, as well as later Korail-operated extensions and branches, are officially bundled together with the aforementioned underground portion as part of a greater Line 1, and the labeling on maps was changed and standardized to the current dark blue color (as illustrated in the map below); also to avoid confusion with Line 4's light blue color. (A slightly different shade of red is now used to label the Shinbundang Line which opened in 2011.)

Main Lines

Local lines:

Yeoncheon, Dongducheon, Uijeongbu or Yangju — Incheon
Uijeongbu (3 times only on weekdays), Kwangwoon Univ. or Cheongnyangni — Cheonan, Sinchang, or Seodongtan
Yeongdeungpo — Gwangmyeong (shuttle)

Express lines:

GW: Gyeongwon Express (Dongducheon - Incheon)

GI: Gyeongin Express (Yongsan – Dongincheon)

GI LE: Gyeongin Limited Express (Yongsan – Dongincheon)

GB A: Gyeongbu Express (Cheongnyangni – Cheonan or Sinchang)

GB B: Gyeongbu Express (Seoul – Cheonan or Sinchang)※ Only Korail trains are used for express trains.
Key:
● Stops at the station
｜ Does not stop at the station
○ Limited service

Station Number	Station Name	Station Name	Station Name	GW	GI	GI LE	GB A	GB B	Transfer	Line Name	Distance	Total Distance	Location

100	Soyosan	Korean: [[:ko:소요산역\|소요산]]			No service	No service	No service		Gyeongwon Line	---	0.0	Gyeonggi-do	Dongducheon-si
101	Dongducheon	Korean: [[:ko:동두천역\|동두천]]		●				2.5		2.5
102	Bosan	Korean: [[:ko:보산역\|보산]]		｜				1.6		4.1
103	Dongducheon Jungang	Korean: [[:ko:동두천중앙역\|동두천중앙]]		●				1.4		5.5
104	Jihaeng	Korean: [[:ko:지행역\|지행]]		●				1.0		6.5
105	Deokjeong (Seojeong Univ.)	Korean: [[:ko:덕정역\|덕정]] <br /><small>([[:ko:덕정역\|서정대학교]])</small>		●				5.6		12.1	Yangju-si
106	Deokgye	Korean: [[:ko:덕계역\|덕계]]		｜				2.9		15.0
107	Yangju (Kyungdong Univ.)	Korean: [[:ko:양주역\|양주]] <br /><small>([[:ko:양주역\|경동대]])</small>		●				5.3		20.3
108	Nogyang	Korean: [[:ko:녹양역\|녹양]]		｜				1.6		21.9	Uijeongbu-si
109	Ganeung (Eulji Univ. Medical Center)	Korean: [[:ko:가능역\|가능]] <br /><small>([[:ko:가능역\|을지대병원]])</small>		｜				1.3		23.2
110	Uijeongbu	Korean: [[:ko:의정부역\|의정부]]		●				1.2		24.4
111	Hoeryong	Korean: [[:ko:회룡역\|회룡]]		●				1.6		26.0
112	Mangwolsa (Shinhan Univ. Campus Number 1)	Korean: [[:ko:망월사역\|망월사]] <br /><small>([[:ko:망월사역\|신한대 제1캠퍼스]])</small>		｜				1.4		27.4
113	Dobongsan	Korean: [[:ko:도봉산역\|도봉산]]		●				2.3		29.7	Seoul	Dobong-gu
114	Dobong	Korean: [[:ko:도봉역\|도봉]]		｜				1.2		30.9
115	Banghak (Dobong-gu Office)	Korean: [[:ko:방학역\|방학]] <br /><small>([[:ko:방학역\|도봉구청]])</small>		｜				1.3		32.2
116	Chang-dong	Korean: [[:ko:창동역\|창동]]		●				1.7		33.9
117	Nokcheon	Korean: [[:ko:녹천역\|녹천]]		｜				1.0		34.9
118	Wolgye (Induk Univ.)	Korean: [[:ko:월계역\|월계]] <br /><small>([[:ko:월계역\|인덕대학]])</small>		｜				1.4		36.3		Nowon-gu
119	Kwangwoon Univ.	Korean: [[:ko:광운대역\|광운대]]		●				1.1		37.4
120	Seokgye	Korean: [[:ko:석계역\|석계]]		Makes all stops				1.1		38.5
121	Sinimun	Korean: [[:ko:신이문역\|신이문]]						1.4		39.9		Dongdaemun-gu
122	Hankuk Univ. of Foreign Studies	Korean: [[:ko:외대앞역\|외대앞]]	앞					0.8		40.7
123	Hoegi	Korean: [[:ko:회기역\|회기]]						0.8		41.5
124	Cheongnyangni (University of Seoul)	Korean: [[:ko:청량리역\|청량리]] <br /><small>([[:ko:청량리역\|서울시립대입구]])</small>			Makes all stops	Mugunghwa-ho, Nuriro, ITX-Saemaeul, A-Train, DMZ Train & ITX-Cheongchun services		Seoul Metro Line 1	1.4	42.9
125	Jegi-dong (Korea Association of Health Promotion)	Korean: [[:ko:제기동역\|제기동]] <br /><small>([[:ko:제기동역\|한국건강관리협회]])</small>							1.0	43.9
126	Sinseol-dong	Korean: [[:ko:신설동역\|신설동]]				(Seongsu Branch)			0.9	44.8
127	Dongmyo	Korean: [[:ko:동묘앞역\|동묘앞]]	앞						0.7	45.5		Jongno-gu
128	Dongdaemun	Korean: [[:ko:동대문역\|동대문]]							0.6	46.1
129	Jongno 5(o)-ga (Samyang Group)	Korean: [[:ko:종로5가역\|종로5가]] <br><small>([[:ko:종로5가\|삼양그룹]])</small>	5						0.8	46.9
130	Jongno 3(sam)-ga	Korean: [[:ko:종로3가역\|종로3가]]	3						0.9	47.8
131	Jonggak (Standard Chartered Bank Korea)	Korean: [[:ko:종각역\|종각]] <br /><small>([[:ko:종각역\|SC제일은행]])</small>							0.8	48.6
132	City Hall	Korean: [[:ko:시청역 (서울)\|시청]]							1.0	49.6		Jung-gu
133	Seoul Station	Korean: [[:ko:서울역\|서울역]]	서울			●	(Seoul Station branch) Mugunghwa-ho, ITX-Saemaeul, S-Train & DMZ Train services		1.1	50.7		Jung-gu
134	Namyeong	Korean: [[:ko:남영역\|남영]]				｜		Gyeongbu Line	1.7	52.4		Yongsan-gu
135	Yongsan	Korean: [[:ko:용산역\|용산]]				●	●		｜	Mugunghwa-ho, Saemaeul-ho, ITX-Saemaeul, ITX-Cheongchun & G-Train services		Yongsan-gu	1.5	53.9
136	Noryangjin	Korean: [[:ko:노량진역\|노량진]]				●	●		｜			2.6	56.5	Dongjak-gu
137	Daebang	Korean: [[:ko:대방역\|대방]]				●	｜		｜			1.5	58.0	Yeongdeungpo-gu
138	Singil	Korean: [[:ko:신길역\|신길]]				●	｜		｜			0.8	58.8
139	Yeongdeungpo	Korean: [[:ko:영등포역\|영등포]]				●	●		●↑	Mugunghwa-ho, Saemaeul-ho & ITX-Saemaeul services		1.0	59.8
140	Sindorim	Korean: [[:ko:신도림역\|신도림]]				●	●		｜			1.5	61.3	Guro-gu
141	Guro	Korean: [[:ko:구로역\|구로]]				●	●		｜			1.1	62.4
142	Guil (Dongyang Mirae Univ.)	Korean: [[:ko:구일역\|구일]] <br /><small>([[:ko:구일역\|동양미래대학]])</small>			｜	｜	No service		Gyeongin Line	1.4		63.8
143	Gaebong	Korean: [[:ko:개봉역\|개봉]]			●	｜		1.0		64.8
144	Oryu-dong	Korean: [[:ko:오류동역\|오류동]]			｜	｜		1.3		66.1
145	Onsu (Sungkonghoe Univ.)	Korean: [[:ko:온수역\|온수]] <br /><small>([[:ko:온수역\|성공회대입구]])</small>			｜	｜		1.9		68.0
146	Yeokgok (The Catholic Univ. of Korea)	Korean: [[:ko:역곡역\|역곡]] <br /><small>([[:ko:역곡역\|가톨릭대]])</small>			●	●		1.3		69.3	Gyeonggi-do	Bucheon-si
147	Sosa (Seoul Theological Univ.)	Korean: [[:ko:소사역\|소사]] <br /><small>([[:ko:소사역\|서울신대]])</small>			｜	｜		1.5		70.8
148	Bucheon (Bucheon Univ.)	Korean: [[:ko:부천역\|부천]] <br /><small>([[:ko:부천역\|부천대]])</small>			●	●		1.1		71.9
149	Jung-dong	Korean: [[:ko:중동역 (부천)\|중동]]			｜	｜		1.7		73.6
150	Songnae	Korean: [[:ko:송내역\|송내]]			●	●		1.0		74.6
151	Bugae	Korean: [[:ko:부개역\|부개]]			｜	｜		1.2		75.8	Incheon	Bupyeong-gu
152	Bupyeong (The Catholic Univ. of Korea Incheon St. Mary's Hospital)	Korean: [[:ko:부평역\|부평]] <br /><small>([[:ko:부평역\|가톨릭대 인천성모병원]])</small>			●	●		1.5		77.3
153	Baegun	Korean: [[:ko:백운역\|백운]]			｜	｜		1.7		79.0
154	Dongam	Korean: [[:ko:동암역\|동암]]			●	｜		1.5		80.5
155	Ganseok	Korean: [[:ko:간석역\|간석]]			｜	｜		1.2		81.7		Michuhol-gu
156	Juan	Korean: [[:ko:주안역\|주안]]			●	●		1.2		82.9
157	Dohwa	Korean: [[:ko:도화역\|도화]]			｜	｜		1.0		83.9
158	Jemulpo (Incheon Univ. Jemulpo Campus)	Korean: [[:ko:제물포역\|제물포]] <br /><small>([[:ko:제물포역\|인천대학교 제물포캠퍼스]])</small>			●	｜		1.0		84.9
159	Dowon	Korean: [[:ko:도원역\|도원]]			｜	｜		1.4		86.3		Jung-gu
160	Dongincheon	Korean: [[:ko:동인천역\|동인천]]			●	●		1.2		87.5
161	Incheon	Korean: [[:ko:인천역\|인천]]			No service			1.9		89.4

↑ Joins other services at Guro Station ↑
141	Guro	Korean: [[:ko:구로역\|구로]]		●	●	●	●	｜		Gyeongbu Line	---	62.4	Seoul	Guro-gu
P142	Gasan Digital Complex (Mario Outlet)	Korean: [[:ko:가산디지털단지역\|가산디지털단지]] <br /><small>([[:ko:가산디지털단지역\|마리오아울렛]])</small>	디지털	No service			●	｜			2.4	64.8		Geumcheon-gu
P143	Doksan	Korean: [[:ko:독산역\|독산]]					｜	｜			2.0	66.8
P144	Geumcheon-gu Office	Korean: [[:ko:금천구청역\|금천구청]]					○		●			1.2			68.0
P145	Seoksu	Korean: [[:ko:석수역\|석수]]					｜	｜			2.3	70.3	Gyeonggi-do	Anyang-si
P146	Gwanak (Anyang Art Park)	Korean: [[:ko:관악역\|관악]] <br /><small>([[:ko:관악역\|안양예술공원]])</small>					｜	｜			1.9	72.2
P147	Anyang	Korean: [[:ko:안양역\|안양]]					●	●	(limited service)		2.4	74.6
P148	Myeonghak (Sungkyul Univ.)	Korean: [[:ko:명학역\|명학]] <br /><small>([[:ko:명학역\|성결대]])</small>					｜	｜			2.2	76.8
P149	Geumjeong	Korean: [[:ko:금정역\|금정]]					●	｜			1.4	78.2		Gunpo-si
P150	Gunpo	Korean: [[:ko:군포역\|군포]]					｜	●			2.2	80.4
P151	Dangjeong (Hansei Univ.)	Korean: [[:ko:당정역\|당정]] <br /><small>([[:ko:당정역\|한세대]])</small>					｜	｜			1.2	81.6
P152	Uiwang (Korea Nat'l Univ. of Transportation)	Korean: [[:ko:의왕역\|의왕]] <br /><small>([[:ko:의왕역\|한국교통대]])</small>					○	●			3.0	84.6		Uiwang-si
P153	Sungkyunkwan Univ.	Korean: [[:ko:성균관대역\|성균관대]]					●	●			2.9	87.5		Suwon-si
P154	Hwaseo	Korean: [[:ko:화서역\|화서]]					｜	｜			2.6	90.1
P155	Suwon	Korean: [[:ko:수원역\|수원]]					●	●	Mugunghwa-ho, Saemaeul-ho, ITX-Saemaeul, G-Train, & S-Train services		2.1	92.2
P156	Seryu	Korean: [[:ko:세류역\|세류]]					｜	｜			2.9	95.1
P157	Byeongjeom (Hanshin Univ.)	Korean: [[:ko:병점역\|병점]] <br /><small>([[:ko:병점역\|한신대]])</small>					●	●			4.3	99.4		Hwaseong-si
P158	Sema	Korean: [[:ko:세마역\|세마]]					｜	｜			2.4	101.8		Osan-si
P159	Osan Univ.	Korean: [[:ko:오산대역\|오산대]]					｜	｜			2.7	104.5
P160	Osan	Korean: [[:ko:오산역\|오산]]					●	●			2.7	107.2
P161	Jinwi	Korean: [[:ko:진위역\|진위]]					｜	｜			4.0	111.2		Pyeongtaek-si
P162	Songtan	Korean: [[:ko:송탄역\|송탄]]					｜	｜			3.8	115.0
P163	Seojeongni (Kookje College)	Korean: [[:ko:서정리역\|서정리]] <br /><small>([[:ko:서정리역\|국제대학]])</small>					●	●			2.2	117.2
P164	PyeongtaekJije (Korea Nat'l Univ. of Welfare)	Korean: [[:ko:평택지제역\|평택지제]] <br /><small>([[:ko:평택지제역\|한국복지대학]])</small>					｜	｜			4.8	122.0
P165	Pyeongtaek	Korean: [[:ko:평택역\|평택]]					●	●	Mugunghwa-ho, Saemaeul-ho (limited service) & ITX-Saemaeul (limited service)		3.7	125.7
P166	Seonghwan (Namseoul Univ.)	Korean: [[:ko:성환역\|성환]] <br /><small>([[:ko:성환역\|남서울대]])</small>					●	●	(limited service)		9.4	135.1	Chungcheongnam-do	Cheonan-si
P167	Jiksan	Korean: [[:ko:직산역\|직산]]					｜	｜			5.4	140.5
P168	Dujeong	Korean: [[:ko:두정역\|두정]]					●	●			3.8	144.3
P169	Cheonan	Korean: [[:ko:천안역\|천안]]					●	●	Mugunghwa-ho, Saemaeul-ho, ITX-Saemaeul & S-Train services		3.0	147.3
P170	Bongmyeong	Korean: [[:ko:봉명역\|봉명]]					Makes all stops (limited service)		Janghang Line	1.3	148.6
P171	Ssangyong (Korea Nazarene Univ.)	Korean: [[:ko:쌍용역 (천안)\|쌍용]] <br><small>([[:ko:쌍용역 (천안)\|나사렛대]])</small>						1.6		150.2
P172	Asan (Sun Moon Univ.)	Korean: [[:ko:아산역\|아산]] <br /><small>([[:ko:아산역\|선문대]])</small>					Mugunghwa-ho, Saemaeul-ho & G-Train (at Cheonan-Asan Station)	1.6		151.8	Asan-si
P173	Tangjeong	Korean: [[:ko:탕정역\|탕정]]						1.8		153.6
P174	Baebang	Korean: [[:ko:배방역\|배방]]						3.1		156.7
P175	Punggi (2025)	풍기	豊基
P176	Onyangoncheon	Korean: [[:ko:온양온천역\|온양온천]]					Mugunghwa-ho, Saemaeul-ho, & G-Train services	4.9		161.6
P177	Sinchang (Soonchunhyang Univ.)	Korean: [[:ko:신창역 (아산)\|신창]] <br><small>([[:ko:신창역 (아산)\|순천향대]])</small>						5.1		166.7

Yeongdeungpo – Gwangmyeong shuttle service

Station Number	Station Name	Station Name	Transfer

↑ Same stops as all-stop Gyeongbu Line services until Yeongdeungpo ↑
	Geumcheon-gu Office	Korean: [[:ko:금천구청역\|금천구청]]	(Main Lines)
	Gwangmyeong	Korean: [[:ko:광명역\|광명]]

Byeongjeom Depot spur service

Station Number	Station Name	Station Name

↑ Joins other Gyeongbu Line services at Byeongjeom ↑
	Byeongjeom (Hanshin Univ.)	Korean: [[:ko:병점역\|병점]] <br /><small>([[:ko:병점역\|한신대]])</small>
	Seodongtan	Korean: [[:ko:서동탄역\|서동탄]]

Historical timeline

1974

August 15: Line 1 is officially opened with 9 stations from Seoul to Cheongnyangni (whose distance is 7.8km (04.8miles)), creating a system of 28 stations (excluding the 9 metro stations) on national railroads from Seongbuk station (now: Kwangwoon University station, the then-northern terminus) to Incheon Station and Suwon Station. Korail is named Korean National Railroad, with Line 1 just referring to the Seoul-Cheongnyangni section.

1978

December 9: The Gyeongwon Line from Yongsan to Seongbuk opens as a new branch, with Ichon and Seongsu (now part of the Jungang Line).

1979

February 1: Yuljeon Station is opened.

1980

January 5: Sinimun Station is opened.

April 1: Seobinggo, Hannam and Hoegi (now part of the Jungang Line) are opened.

July 10: Seongsu is renamed Eungbong Station

1982

August 2: Seoksu Station is opened.

1984

January 1: Yuljeon Station is renamed Seongdae-ap Station.

May 22: Sindorim Station is opened.

November 20: Baegun Station is opened.

1985

January 14: Seokgye Station is opened.

April 20: Chang-dong is opened as a northward extension.

August 22: Wolgye and Nokcheon are opened.

October 18: Oksu Station (now part of the Jungang Line) is opened.

1986

September 2: 6 stations from Uijeongbu to Chang-dong are opened as a northward extension.

1987

October 5: Uijeongbu Bukbu Station is opened.

December 31: Jung-dong Station is opened.

1988

January 16: Onsu Station is opened.

October 25: The Ansan Line is opened as a southward branch, from Geumjeong Station to Ansan Station.

1994

July 11: Ganseok and Dowon are opened.

December 1: Seongdae-ap Station is renamed to Sungkyunkwan University.

1995

February 16: Guil Station is opened.

1996

January 1: Hwigyeong Station is renamed to Hankuk University of Foreign Studies Station

March 28: Bugae Station is opened.

1997

April 30: Sosa Station is opened.

1998

January 7: Singil and Doksan are opened.

2000

Korea National Railroad and Line 1 are integrated as Seoul (Metropolitan) Subway Line 1.

2001

November 30: Dohwa Station is opened.

2003

April 30: Seryu and Byeongjeom are opened as a southward extension. The Ansan Line service is replaced with an extended Seoul Subway Line 4.

2004

August 25: Bugok Station is renamed Uiwang Station.

2005

January 20: 8 stations from Byeongjeom to Cheonan are opened as another southward extension.

December 16: The Gyeongwon Line branch from Yongsan Station to Hoegi Station and the Jungang Line from Hoegi Station to Deokso Station open and are renamed to the separate Yongsan-Deokso Line. This service was the predecessor to the current Jungang Line.

December 21: Dongmyo Station is opened.

December 27: Sema and Osan College Stations are opened.

2006

June 30: Jinwi and Jije Stations are opened.

July 1: Garibong Station is renamed to Gasan Digital Complex.

December 15: 8 stations from Soyosan to Uijeongbu Bukbu are opened as a northward extension. A spur line to Gwangmyeong Station is created. Uijeongbu Bukbu Station is renamed to Ganeung.

2007

December 28: Deokgye Station is opened.

2008

December 15: 6 stations from Cheonan to Sinchang are opened as another southward extension.

December 29: Siheung Station is renamed to Geumcheon-gu Office.

2010

January 21: Dangjeong Station is opened.

February 26: Seodongtan Station is opened.

2015

February 3: Gyeongin Line express trains start stopping at Gaebong and Jemulpo stations.

2017

July 6: A new limited express service was launched between Yongsan and Dongincheon stations.

2019

December 30: All Gyeongbu Line express trains start stopping at Geumjeong and Sungkyunkwan University stations and are extended to Cheongnyangni. Gyeongbu Line express trains no longer stop at Gunpo station.

2021

October 30: Tangjeong station opened as an in-fill station between Asan and Baebang.

2023

December 16: Three stations from Soyosan station to Yeoncheon station on the Gyeongwon Line are opened as a northward extension of the line.^[6]

Rolling stock

Current

Seoul Metro 1000 series
- Rheostat-controlled electric car (rebuilt cars) – since 1974
- VVVF inverter-controlled electric car – since 1999 (Restricted to DC/AC neutral areas)
Korail Class 311000
- First generation – since 1996 (Currently in process of being retired)
- Second generation – since 2003
- Third generation – since 2005
- Fourth generation – since 2019 (Korail Class 312000)
Korail Class 319000 (for Gwangmyeong Shuttle) – since 2006

Former

Seoul Metro 1000 series
- Rheostat-controlled electric car (1st batch) – Since 1974
Korail Class 1000
- First generation – 1974-2004 (some non-driving cars lasted until 2014)
- Second generation – 1986-2017 (some non-driving cars lasted until 2019)
- Third generation – 1994-2020

Depots and facilities

(from north to south)

Majeon signal box between Deokye and Yangju Stations
Chang-dong Depot (shared with Line 4, operated by Seoul Metro)
Seongbuk Depot
Imun Depot
Guro Depot
Siheung Depot (actually after Oido Station on Line 4, also used for heavy maintenance of Line 1 trains owned by Korail, accessed by a crossover located after Geumjeong Station)
Byeongjeom Depot

External links

Notes and References

Web site: http://infra.seoul.go.kr/archives/1092 . ko:지하철건설현황 . Seoul City Government . ko . Status of Subway Construction . 2014-02-22.
Web site: 서울교통공사 블로그 : 네이버 블로그. 2021-05-31. blog.naver.com.
Web site: Seoul's first subway line opened in 1974. Korea Times. 2014-07-25. 2011-02-13.
<오후여담>좌측통행, Munhwailbo
Web site: 20일부터 하루3회 서울驛(역)~水原(수원) 직통電鐵(전철)운행.
News: 병극 . 장 . 14 December 2023 . "전철 1호선의 진격...경원선 동두천-연천까지 달린다" . “The advance of subway line 1... Gyeongwon Line runs from Dongducheon to Yeoncheon.” . Rail Economy News . 20 December 2023.

●	Stops at the station
｜	Does not stop at the station
○	Limited service