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Super Rapid Train (SRT)
	SRT train in Suseo station
Overview
Service type	Inter-city; high-speed rail;
Status	Operating
Locale	South Korea
First service	6 December 2016; 8 years ago
Current operator(s)	SR Corporation
Website	etk.srail.kr/main.do
Route
Termini	Suseo; Busan or Mokpo
Service frequency	Suseo–Busan (40x daily); Suseo–Mokpo (20x daily);
Train number(s)	3xx (Suseo–Busan); 6xx (Suseo–Mokpo);
Line(s) used	Gyeongbu high-speed railway; Honam high-speed railway; Suseo–Pyeongtaek high-speed railway;
On-board services
Class(es)	First class; Standard class;
Disabled access	Fully accessible
Catering facilities	Trolley service
Entertainment facilities	Yes
Baggage facilities	Yes
Technical
Rolling stock	KTX-Sancheon Class 120000; KTX-Sancheon Class 130000;
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	25 kV/60 Hz overhead catenary
Operating speed	Up to 305 km/h (190 mph)
Route map
Route map

The Super Rapid Train,^[2] often known as SRT,^[2] is a high-speed rail service operated by SR Corporation. The service starts at Suseo station in southeast Seoul and terminates at either Busan station or Mokpo station.

Around 86% of the train service runs 50 meters underground between Suseo and Cheonan-Asan stations. Dongtan station, the first station after departing from Suseo, is the first underground high-speed railway station in Korea. The SRT runs the Seoul–Busan route 8 minutes faster than KTX as it travels exclusively on dedicated Suseo–Pyeongtaek, Gyeongbu and Honam HSR lines.^[3] The Suseo-Pyeongtaek HSR line was built exclusively for this service.^[4]

Branding

Before official announcement by SR, Ministry of Land, Infrastructure and Transport used tentative term called Suseo High-speed Railway (수서고속철도).^[5]

On October 12, 2015, SR proposed three candidate name for new high-speed rail service – SRT (Super Rapid Train), HSR (High-speed train of SR), SRH (SR High-speed train) in which SRT (Super Rapid Train) was chosen.^[6]

Electrification

The SRT operates 25 kV AC on the entire line and interconnection with Korail is 1.5 kV DC. At Suseo Station, the power comes from rigid overhead lines before transitioning to a 1500mm overhead catenary wire after leaving the station.

Route

Legend

●	All trains stop
○	Some trains stop
△	Few trains stop

Suseo–Busan

Station	Distance (from Suseo)		Stopping
Station	km	mi	Stopping
Suseo	0.0	0.0	●
Dongtan	32.6	20.2	○
PyeongtaekJije	53.6	33.3	△
Cheonan–Asan	78.7	48.9	○
Osong	107.3	66.6	○
Daejeon	142.5	88.5	●
Gimcheon (Gumi)	216.3	134.4	△
Dongdaegu	269.4	167.3	●
Gyeongju	318.4	197.8	○
Ulsan	348.4	216.4	○
Busan	400.1	248.6	●

Suseo–Mokpo

Station	Distance (from Suseo)		Stopping
Station	km	mi	Stopping
Suseo	0.0	0.0	●
Dongtan	32.6	20.2	○
PyeongtaekJije	53.6	33.3	△
Cheonan–Asan	78.7	48.9	○
Osong	107.3	66.6	○
Gongju	151.1	93.8	△
Iksan	197.1	122.4	●
Jeongeup	239.2	148.6	△
GwangjuSongjeong	289.7	189.0	●
Naju	305.5	189.8	△
Mokpo	356.5	221.5	△

Rolling stock

KTX-Sancheon

The train service is operated using 22 KTX-Sancheon Class 120000 train sets and 10 KTX-Sancheon Class 130000 train sets. Class 120000 train sets was originally operated by Korail's KTX service before it was transferred to SR at the end of 2016, while Class 130000 train sets are new builds.^[7]

Demand for extension

Since Super Rapid Train only has two routes, there are many local cities that only KTX serves. In November 2016, Jeonju and Yeosu urged the SR Corporation to run trains on the Jeolla Line.^[8] In December 2016, the mayor of Pohang proposed running SRT service to Pohang station using the Donghae Line.^[9] In January 2021, the mayor of Changwon urged the SR Corporation to run SRT service to Changwon station using the Gyeongjeon Line.^[10]