Korea Train Express - Wikipedia, the free encyclopedia
Korea Train eXpress (KTX) 한국고속철도 Locale South Korea Dates of operation 2004–present Track gauge 1,435 mm (4 ft 8 1 ⁄ 2 in) Standard gauge ... Korea Train eXpress (KTX) is South Korea's high-speed rail system, operated by Korail. Construction began on ......