Seoul Subway Line 4


Seoul Subway Line 4 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 is in Jeongwang 4-dong, Siheung City, and the northern terminus 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:
1993:
1994:
2000:
2003
2010
2014
2017

Future

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

Stations

Depots, junctions, and points of interest


Current

Seoul Metro

Seoul Metro