The Gyeongbu line (Gyeongbuseon) is a railway line in South Korea and is considered to be the most important and one of the oldest in the country. It was constructed in 1905, connecting Seoul with Busan via Suwon, Daejeon, and Daegu. It is by far the most heavily travelled rail line in South Korea.
The Jungang line is a railway line connecting Cheongnyangni in Seoul to Moryang in Gyeongju in South Korea, traversing central South Korea from the northwest to the southeast. It is also referred to the rail line of the Seoul Metropolitan Subway from Yongsan station to Jipyeong station. The section from Cheongnyangni to Dodam was designated as a semi-high-speed railway.
The Gyeongchun Line is a regional rail line between Seoul and Chuncheon, South Korea, operated by Korail. Its name is derived from Gyeong and Chuncheon. It was completely reconstructed in the 2000s. Service on it has operated between Sangbong station on the Jungang Line in eastern Seoul and Chuncheon station, as part of the Seoul Metropolitan Subway system, since December 21, 2010. A class of regional rail service named ITX-Cheongchun began operations on February 28, 2012, linking Chuncheon to Cheongnyangni and Yongsan Stations.
The Donghae Nambu Line (Korean: 동해남부선) is a railway line connecting Busan to Pohang in South Korea. The line runs along South Korea's east coast. On December 30, 2016, it was merged into Donghae Line.
The Daegu Line is a railway line in South Korea. The line connects Gacheon station on the Gyeongbu Line in Daegu to Yeongcheon on the Jungang Line. The line is served by frequent passenger trains between Seoul, Dongdaegu, and Gyeongju, Pohang and Ulsan.
Korea Train eXpress (Korean: 한국고속철도), often known as KTX, is South Korea's high-speed rail system, operated by Korail. Construction began on the high-speed line from Seoul to Busan in 1992. KTX services were launched on April 1, 2004.
Dongdaegu Station (Korean: 동대구역), meaning "East Daegu Station", is a railway station in Daegu, South Korea. It is on the national high-speed KTX railway network, 282 km (175 mi) south of Seoul Station.
AREX is a South Korean airport rail link and commuter rail line that links Incheon International Airport with Seoul Station via Gimpo International Airport. The section between the two airports opened on March 23, 2007, and line was extended to Seoul Station on December 29, 2010. Long-distance Korea Train Express high speed trains started to use the line from June 30, 2014, but discontinued service in March 2018 due to low ridership.
Rail transport in South Korea is a part of the transport network in South Korea and an important mode of the conveyance of people and goods, though railways play a secondary role compared to the road network. The network consists of 4,285 km (2,663 mi) of standard-gauge lines connecting all major cities with the exception of Jeju City on Jeju Island, which does not have railways; of the network, 2,790 km (1,730 mi) are double-tracked and 3,187 km (1,980 mi) are electrified. In 2018, rails carried 11.5 percent of all traffic in South Korea – 134.8 million passengers and 30.9 million tonnes of freight – with roads carrying 88.3 percent.
Gwangmyeong station (Korean: 광명역) is a train station in Gwangmyeong, South Korea. The station was newly built as a stop of national railway operator Korail's KTX high-speed service, 22.0 km (13.7 mi) south of Seoul Station.
The Gyeongbu high-speed railway, also known as Gyeongbu HSR, is South Korea's first high-speed rail line from Seoul to Busan. KTX high-speed trains operate three sections of the line: on 1 April 2004, the first between a junction near Geumcheon-gu Office station, Seoul and a junction at Daejeonjochajang station north of Daejeon, and a second between a junction at Okcheon station, southeast of Daejeon, and a junction near Jicheon station, north of Daegu entered service; then on 1 November 2010, the third section, between a junction west of Daegu and Busan became operational. The missing gaps across the urban areas of Daejeon and Daegu were in construction for an expected opening in 2014, separate tracks into Seoul Station were also planned. The temporary ends of the three sections were connected to the parallel conventional Gyeongbu Line by tracks that will serve as interconnector branches upon the completion of the entire line. On 1 August 2015, construction on urban areas of Daejeon and Daegu were completed; all the sections of HSR line were connected.
The Honam high-speed railway, also known as Honam HSR, is a high-speed rail between Osong and Mokpo in South Korea. The line is a part of Korail's Korea Train Express (KTX) system, accelerating Seoul–Mokpo and Seoul–Gwangju KTX high-speed services which currently use the existing conventional Honam Line. On April 1, 2015, the line was inaugurated by the South Korean President Park Geun-hye with the attendance of 1200 invited guests and members of the public at Gwangju Songjeong Station in Gwangju, the line's terminus. The line diverges from Osong station on the Gyeongbu high-speed railway, and stops at Gongju, Iksan, Jeongeup Stations. Journey times between Seoul and Gwangju has been cut from 2 h 40 min to just 90 min, making daily commuting possible. The Honam HSR is intended to bring business, and economic opportunities to the province of Jeollanam-do, which has seen slower development than other parts of South Korea. The line has been open to the public since April 2, 2015 for revenue service.
The Gyeonggang Line (경강선) is a rail line in South Korea, which at present comprises two distinct sections. The first one, which opened on September 24, 2016, is part of the Seoul Metropolitan Subway system in Gyeonggi Province, South Korea, and runs from the city of Seongnam to Yeoju City, partially coinciding with the route of the former narrow-gauge Suryeo Line. The second section, which is located entirely in Gangwon Province, runs between Gangneung and Wonju and opened on December 22, 2017, in anticipation of the 2018 Winter Olympics. This section of the line offers KTX service from Seoul, through the Jungang Line. In the future, the two sections are to be connected, and the Gyeonggang Line will be extended westwards to Siheung.
The KTX-Sancheon is a South Korean high-speed train built by Hyundai Rotem in the second half of the 2000s and operated by Korail since March 2010. With a top speed of 305 km/h (189.5 mph), the KTX-Sancheon is the second commercial high-speed train operated in South Korea and the first domestic high-speed train that is designed and developed in South Korea.
The KTX-I, also known as the TGV-K or Korail Class 100000, is a South Korean high speed train class based on the French TGV Réseau. The 20-car formation of the trainsets without restaurant car is optimized for high capacity. The 46 trainsets were built partly in France and partly in South Korea in the framework of a technology transfer agreement, which was the basis for further domestic high-speed train development in South Korea.
The Super Rapid Train, often known as SRT, 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.
High-speed rail service in South Korea began with the construction of a high-speed line from Seoul to Busan in 1992, and was inspired by Japan's Shinkansen. The first commercial high-speed rail service was launched on April 1, 2004. Currently, South Korea hosts two high-speed rail operators: Korea Train eXpress (KTX) and Super Rapid Train (SRT).
Great Train eXpress is a planned higher-speed commuter rail network in the Seoul Capital Area project consisting of three separate lines, named GTX A, GTX B and GTX C, and scheduled for completion in 2025.
The Suseo–Pyeongtaek high-speed railway, also known as Suseo–Pyeongtaek HSR, is a high-speed rail line from Suseo station in southeast Seoul to a junction with the existing Gyeongbu high-speed railway in South Korea. The line was built to ensure southeast Seoul and southern Gyeonggi-do have high-speed rail connections.
SR Corporation, also known as Supreme Railways, is a South Korean rail operator that operates high-speed rail services.
Korail 
