Seoul Subway Line 2

Seoul Subway Line 2 (), also known as the Circle Line, is a circular line of the Seoul Metropolitan Subway. The line running clockwise is called the "inner circle line" and the counter-clockwise line is called the "outer circle line". This is Seoul's most heavily used line, and consists of the main loop (), the Seongsu Branch () and the Sinjeong Branch () for a total line length of . The Line 2 loop is the third longest subway loop in the world after Moscow Metro Bolshaya Koltsevaya line and Beijing Subway Line 10. In 2019, Line 2 had an annual ridership of 812 million passengers or 2.2 million passengers per day.
Headways on the line vary from 2 minutes 18 seconds on peak periods [사회]서울 지하철2호선 출근길 배차간격 12초 짧아져. Ytn.co.kr (2010-11-22). Retrieved on 2013-07-12. and 5–6 minutes off-peak periods. The line connects the city centre to Gangnam, Teheran Valley and the COEX/KWTC complex.
== History ==
In 1972, then-Mayor of Seoul (1932–1996) changed the existing plans for the Seoul Subway to better enable connectivity around the growing Seoul City and allow for development to take place across the Seoul Capital Area. Line 2 was built in 1978–84 together with the Seongsu Branch (the second Sinjeong Branch was built 1989–95). Dangsan bridge was closed for reconstruction in 1996 and reopened November 22, 1999. The old steel girder bridge was replaced by a long concrete bridge between Dangsan on the southern side of the river and Hapjeong on the northern bank.
Yongdu station on the Seongsu Branch (between Sindap and Sinseol stations) is the first station in the Seoul Subway system with operating platform screen doors. As of 2008 platform screen doors are operating at all stations along Line 2. New rolling stock has also progressively came on line, replacing older vehicles.
*October 31, 1980: Sinseol-dong – Sports Complex (via Seongsu) section opened
*December 23, 1982: Sports Complex – Seoul Nat'l Univ. of Education section opened
*September 16, 1983: Euljiro 1-ga – Seongsu section opened; Sinseol-dong – Seongsu section separated as Seongsu Branch
*December 17, 1983: Seoul Nat'l Univ. of Education – Seoul Nat'l University section opened
*May 22, 1984: Seoul Nat'l University – Euljiro 1-ga (via Sindorim) section opened; Circle Line (the longest in the world from then until 2013) completed
*May 22, 1992: Sindorim – Yangcheon-gu Office section opened as Sinjeong Branch
*February 29, 1996: Sinjeongnegeori Station opened as extension of Sinjeong Branch
*March 20, 1996: Kkachisan Station opened as extension of Sinjeong Branch
*October 20, 2005: Yongdu Station opened on the Seongsu Branch
*September 2010: Siemens Mobility ATP/ATO GoA 2 signalling system implemented on newer trains to increase frequencies and route capacity.
==Facilities==
In December 2010 the line is recorded as having the highest WiFi data consumption in the Seoul Metropolitan area. It averaged 2.56 times more than the other 14 subway lines fitted with WiFi service zones.
In 2011, retailer Homeplus opened the world's first virtual supermarket at Seolleung station, where smartphone users can photograph the bar code of life-size pictures, on the walls and platform screen doors, of 500 items of food, toiletries, electronics etc., for delivery within the same day.
== Stations ==
All stations on all branches are in Seoul. 
=== Main Line ===
StationNumber	Station Name 	Station Name	Station Name	Transfer 	Distance	TotalDistance	Location		
 	 	 	 	 	 	 	 		
 	City Hall 	 	 	 	 	 	 		
 	Euljiro 1(il)-ga (Hana Bank) 	 	 	 	 	 	 		
 	Euljiro 3(sam)-ga (Shinhan Card) 	 	 	 	 	 	 		
 	Euljiro 4(sa)-ga (BC Card) 	 	 	 	 	 	 		
 	Dongdaemun History & Culture Park (DDP) 	 	 	 	 	 	 		
 	Sindang 	 	 	 	 	 	 		
 	Sangwangsimni 	 	 	 	 	 	 		
 	Wangsimni (Seongdong-gu Office) 	 	 	 	 	 	 		
 	Hanyang Univ. 	 	 	 	 	 	 		
 	Ttukseom 	 	뚝섬 	 	 	 	 		
 	Seongsu 	 	 	(Seongsu branch) 	 	 	 		
 	Konkuk Univ. 	 	 	 	 	 	 		
 	Guui (Gwangjin-gu Office) 	 	 	 	 	 	 		
 	Gangbyeon (Dongseoul Bus Terminal) 	 	 	 	 	 	 		
 	Jamsillaru(Suhyup Insurance) 	 	나루 	 	 	 	 		
 	Jamsil (Songpa-gu Office) 	 	 	 	 	 	 		
 	Jamsilsaenae 	 	새내 	 	 	 	 		
 	Sports Complex 	 	 	 	 	 	 		
 	Samseong (World Trade Center Seoul) 	 	 	 	 	 	 		
 	Seolleung (Acuon Savings Bank) 	 	 	 	 	 	 		
 	Yeoksam(Centerfield) 	 	 	 	 	 	 		
 	Gangnam 	 	 	 	 	 	 		
 	Seoul Nat'l Univ. of Education(Court & Prosecutors' Office)	() 	 	 	 	 	 		
 	Seocho 	 	 	 	 	 	 		
 	Bangbae (Baekseok Arts Univ.) 	 	 	 	 	 	 		
 	Sadang (Daehang Hospital) 	 	 	 	 	 	 		
 	Nakseongdae (Ganggamchan) 	 	 	 	 	 	 		
 	Seoul Nat'l Univ. (Gwanak-gu Office) 	 	서울 	 	 	 	 		
 	Bongcheon 	 	 	 	 	 	 		
 	Sillim (Yangji Hospital) 	 	 	 	 	 	 		
 	Sindaebang 	 	 	 	 	 	 		
 	Guro Digital Complex (Wonkwang Digital Univ.) 	 	디지털 	 	 	 	 		
 	Daerim (Guro-gu Office) 	 	 	 	 	 	 		
 	Sindorim 	 	 	(Sinjeong branch)	 	 	 		
 	Mullae (Kim's Eye Hospital) 	 	 	 	 	 	 		
 	Yeongdeungpo-gu Office 	 	 	 	 	 	 		
 	Dangsan 	 	 	 	 	 	 		
 	Hapjeong (Holt Children's Services, Inc) 	 	 	 	 	 	 		
 	Hongik Univ.(Eduwill Academy) 	 	 	 	 	 	 		
 	Sinchon 	 	 	 	 	 	 		
 	Ewha Womans Univ. 	 	 	 	 	 	 		
 	Ahyeon (Chugye Univ. for the Arts) 	 	 	 	 	 	 		
 	Chungjeongno (Kyonggi Univ.) 	 	 	 	 	 	 		
=== Seongsu Branch ===
StationNumber	Station Name 	Station Name	Station Name	Transfer 	Distance	TotalDistance	Location		
 	 	 	 	 	 	 	 		
 	Seongsu 	 	 	(Main Line)	 	 	 		
 	Yongdap 	 	 	 	 	 	 		
 	Sindap 	 	 	 	 	 	 		
 	Yongdu (Dongdaemun-gu Office)	 	() 	 	 	 	 		
 	Sinseol-dong 	 	 	 	 	 	 		
 	 	 	 	 	 	 	 		
=== Sinjeong Branch ===
StationNumber	Station Name 	Station Name	Station Name	Transfer 	Distance	TotalDistance	Location		
 	 	 	 	 	 	 	 		
 	Sindorim 	 	 	(Main Line)	 	 	 		
 	Dorimcheon 	 	 	 	 	 	 		
 	Yangcheon-gu Office	 	 	 	 	 	 		
 	Sinjeongnegeori 	 	네거리 	 	 	 	 		
 	Kkachisan 	 	까치 	 	 	 	 		
 	 	 	 	 	 	 	 		
== Extension ==
There is a possible extension currently in the conception stage to extend the Sinjeong Branch to 3.7 km to Gayang Station on Line 9. The path would include a new station named Gangseo-gu Office in between Kkachisan and Gayang.
== Route map ==
==Rolling stock==
Five generations of Seoul Metro 2000 series trains have been used on Seoul Subway Line 2. As of , only third, fourth and fifth generation 2000 series trains are in operation (manufactured by Hyundai Rotem and Dawonsys respectively), since all first (MELCO thyristor chopper control) and second generation (GEC Traction/Alstom thyristor chopper control) trains have been retired between 2008 and 2023. All trains are stored and maintained at Sindap Depot on the Seongsu Branch and Sinjeong Depot on the Sinjeong Branch.
==See also==
* 2014 Seoul subway crash
* Subways in South Korea
* Seoul Metropolitan Subway
==Notes==
== References ==
== External links ==
* Seoul Metro
* Map, station and route finder
 
Category:Seoul Metropolitan Subway lines
Category:Railway loop lines
Category:Railway lines opened in 1980
Category:1980 establishments in South Korea