Suseo high-speed railway

The Suseo–Pyeongtaek high-speed railway or Super Rapid Train (SRT) (formerly known as the Suseo HSR or Metropolitan Area HSR) is a high-speed railway from Suseo in southeast Seoul to a junction with the existing Gyeongbu high-speed railway in South Korea. The line is part of SR's Korea Train Express (KTX) system, and provides an alternative Seoul terminus for Gyeongbu KTX and Honam KTX services to Mokpo and Busan at the Seoul end.

Suseo–Pyeongtaek high-speed railway
SR Train logo.png
KTX linemap en.svg
The Suseo–Pyeongtaek HSR in yellow
TypeHigh-speed rail
LocaleSouth Korea
TerminiSuseo station, Seoul
Junction with Gyeongbu HSR
near Pyeongtaek, Gyeonggi-do
Line number103 (KR)
Opened9 December 2016 [1]
OwnerKorea Rail Network Authority
Operator(s)Korea Train Express
Line length61.1 km (38.0 mi)[2]
Number of tracks2
Track gauge1,435 mm (4 ft 8 12 in) standard gauge
Electrification25 kV/60 Hz Catenary
Operating speed300 km/h (186 mph)[2]
Suseo high-speed railway
Revised RomanizationSuseo Pyeongtaek Gosok Cheoldo
McCune–ReischauerSusŏ P'yŏngtaek Kosok Ch'ŏlto

86% of the new route runs 50 meters under the ground. Dongtan station, the first station after departing from Suseo, is the first high-speed railway station in Korea built underground. The SRT runs the Seoul−Busan route a few minutes faster than KTX, while its fares are 10% lower.[2]


Origins of the projectEdit

While South Korea's first high-speed line, the Gyeongbu high-speed railway (Gyeongbu HSR) was in construction between Seoul and Busan, the government considered a second line from Seoul to Mokpo, the Honam high-speed railway (Honam HSR). The first feasibility study in 2003 came to the conclusion that the construction of a full line is not justified by demand, and proposed a two-stage construction.[3] The first stage, to be realised by 2015, would involve two branches from the Gyeongbu HSR, one of which would lead to a second Seoul terminus at Suseo in the southeast part of the city.[3] However, in plans made official in August 2006,[4] the Suseo branch was no longer included.[3]

The Suseo branch was re-launched as a separate project, the Metropolitan Area high-speed railway (initially the Suseo high-speed railway), on June 1, 2008, to improve traffic connections to two new housing development areas situated along the line in Dongtan.[5]

Planning stageEdit

Preliminary plans foresaw a 60.7 km (37.7 mi) long line from Suseo to the junction with the Gyeongbu HSR near Pyeongtaek, and three new KTX stations at Suseo, Dongtan and Pyeongtaek, with the last one situated after the junction on the Gyeongbu HSR.[5] The line was to run in a tunnel at a depth of 50 m (160 ft) between Suseo and Dongtan, and construction with a budget of 4.18 trillion South Korean won was foreseen to be complete in 2015.[5] The travel time from Suseo to Dongtan was foreseen to be 12 minutes.[5] The target date for finishing the line was later moved ahead to 2014.[6]

The basic design was completed on April 28, 2010.[7] The planned length of the line changed to 61.1 km (38.0 mi), and planned stations reduced to two, at Suseo and Dongtan.[7] The government set out a timeplan, according to which detailed design was to commence immediately, and construction was to take place from the second half of 2011 until the end of 2014.[8] The first detailed design contracts were awarded in September 2010.[9]

Once the line is completed, the expected travel time will be 1 hour 59 minutes from Suseo to Busan along the Gyeongbu HSR, and 1 hour 49 minutes from Suseo to Mokpo along the Honam HSR.[9]

Longer term plansEdit

On September 1, 2010, the South Korean government announced a strategic plan to reduce travel times from Seoul to 95% of the country to under 2 hours by 2020.[10] As part of the plan, tracks for up to 230 km/h (143 mph) are to connect Suseo and Yongsan in central Seoul, which may see KTX service.[10]

See alsoEdit


  1. ^ "Suseo High Speed Railway Opens December 9". Korea Tourism Organisation. 2016-11-21. Retrieved 2016-11-23.
  2. ^ a b c "SRT to start operation next month". The Korea Times. 2016-11-02. Retrieved 2017-02-17.
  3. ^ a b c Chung, Il-Ho (July 2006). "Plan for Honam High-Speed Railway" (PDF). Space and Environment. Korean Research Institute for Human Settlements. 25: 6–8. Archived from the original (PDF) on 2012-03-11. Retrieved 2010-08-29.
  4. ^ "High-Speed Train to Extend Southwest Route". The Chosun Ilbo. 2006-08-23. Retrieved 2010-08-28.
  5. ^ a b c d 동탄~수서 12분 걸리는 고속철 만든다 (in Korean). Hankyung. 2008-06-01. Retrieved 2010-11-11.
  6. ^ "KTX ready for big expansion in 2010". JoongAng Daily. 2009-12-31. Retrieved 2010-08-29.
  7. ^ a b "수서~평택 고속철도 61㎞ 구간 설계착수". (in Korean). Retrieved 2018-06-14.
  8. ^ 수도권 고속철 수서~평택 설계 착수 (in Korean). Maeil Business Newspaper. 2010-04-28. Archived from the original on 2012-07-16. Retrieved 2010-11-11.
  9. ^ a b "수서~평택 고속철도 수주…현대산업개발·GS건설" (in Korean). Hankyung. 2010-09-08. Retrieved 2010-11-11.
  10. ^ a b "Bullet trains coming to a town near you by 2020". JoongAng Daily. 2010-09-02. Retrieved 2010-10-27.

External linksEdit