Rapid transit in South Korea
Rapid transit systems operate in six major South Korean cities, except for Ulsan and Sejong.Currently operational
- Metropolitan Rail
- *Korail operates the following commuter lines: Bundang Line, Gyeongchun Line, Gyeongui–Jungang Line, Suin Line, Gyeonggang Line, and parts of metro lines Line 1, Line 3, Line 4.
- *Korail Airport Railroad operates AREX
- *NeoTrans operates Shinbundang Line
- *E-Rail operates Seohae Line
- Urban Rail
- *Seoul Metro operates Line Line 2, Line 5, Line 6, Line 7, Line 8, and parts of lines Line 1, Line 3, Line 4, and Line 9 Second Extension.
- *Seoul Metro Line9 operates Line 9 First Extension
- *Incheon Transit operates the whole Incheon subway system.
- Light Metro Rail
- *Uijeongbu Light Rail operates U Line
- *Yongin Rapid Transit operates EverLine
- *UI trans operates Ui LRT
Busan-Ulsan-Gyeongnam Area
- Metropolitan Rail
- *Korail operates the following commuter line: Donghae
- Urban Rail
- *Busan Transportation operates lines 1, 2, 3, and 4
- Light Metro Rail
- *B&G Metro operates the Busan–Gimhae light rail
Daegu-Gyeongbuk Area
- Daegu Metropolitan Transit operates the whole subway system.
Daejeon
- Daejeon Metropolitan Express Transit operates the whole subway system.
Gwangju
- Gwangju Metropolitan Rapid Transit operates the whole subway system.
Proposed awaiting for approval
- Sinrim Line - 8.92 km
- Ui LRT extension - 3.50 km
- Seoul Subway Line 9 Phase IV- 3.80 km
