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 Metropolitan 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. The southern terminus is in Jeongwang 4-dong, Siheung City, and the northern terminus is in Jinjeop-eup, Namyangju-si, Gyeonggi-do; the newly built northern section is correspondingly owned by a company owned by Namyangju-si, with operations contracted to Seoul Metro. In 2022, the Seoul Metro operated section had an annual ridership of 219,587,000 or about 601,608 passengers per day.
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
1985:1993:
1994:
2000:
2003
2010
2014
2017
2020
2022:
Future
Express services are planned to start skipping various stations north of Sanbon station by 2023 to cut travel times.Depots, junctions, and points of interest
Jinjeop Depot- Turnback siding after Danggogae station
- Changdong Depot
- Non-revenue connecting track to Line 3 before Chungmuro station
- Dongjak Bridge
- Chongshin Univ. – Sadang scissors crossover
- Hanyang University, ERICA Campus
- Turnback siding after Sadang station
- Namtaeryong–Seonbawi track crossing point
- * 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
- Siheung Depot
- 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
- * 1st generation, DC & AC: 4-51~4-71
- * 2nd generation: 4-81~4-85
- * 3rd generation: 4-50~4-70
- * 4th generation: 4-01~4-26
Korail
- Korail Class 341000
- * 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
- * Wide-width GEC Traction chopper resistor controlled electric car
Korail
- Korail Class 1000
- Korail Class 341000 1st generation: 341-01~341-25,
- Korail Class 341000 2nd generation: 341-26~341-30,