Hello, I offer the high speed line in South Korea from Seoul to Busan with the KTX I (Korean TGV). The KTX I is fitted with TVM430-type cabin signaling like the French TGV and the Hitachi Javelin class 395 and Eurostar class 373. The length of this high-speed road is 325 km between Seoul and Busan.
Would be interesting to have South Korean routes, as they feel like a very weird combination of American, European and Japanese style trains all meshed together, making it quite interesting and unique because of it. However perhaps a route at around 100km max would be better to start with first
This should be an interesting route and by the way There are two terminals Seoul station and Suseo Station southern Seoul.