Seoul’s Suseo-Pyeongtaek HSR line opens December 9, 2016 | Asia Pacific News Supreme Railways has commenced service on the 61-km Suseo-Pyeongtaek high-speed rail (HSR) line, which is part of the Korea Train Express (KTX) system in South Korea. The line provides an alternative ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password