South Korea has launched a pilot program for cross-operation between KTX and SRT high-speed trains, as a first step toward integrating the country’s high-speed rail system. The program, initiated by the Ministry of Transport together with operators Korail and SR, began on February 25 and involves the mutual circulation of trains from the two systems between the main stations in the capital Seoul. Authorities say the test is part of the roadmap for integrating the high-speed network, presented last December. KTX departs from Suseo, SRT from Seoul Station Under the pilot program, KTX trains will run between Suseo Station and Busan, and SRT trains will operate between Seoul Station and Busan, each with one round trip per day. Until now, the two systems were operated separately: The test aims to verify a more flexible operation of high-speed trains, regardless of the type of train or departure station. KTX trains mainly departed from Seoul Station; SRT trains departed from Suseo Station, another major station south of the capital. The authorities estimate that this change will increase transport capacity, particularly at Suseo Station, where demand for tickets is very high. More seats for passengers The KTX-1 train with 955 seats will be introduced on the Suseo–Busan route, replacing the SRT trains, which have approximately 410 seats. As a result, the number of seats available will increase significantly, which could reduce the booking difficulties frequently encountered during busy periods, such as weekends or holidays. During the test period, fares will be adjusted to avoid confusion for passengers. Thus, the KTX departing from Suseo will have the same fare as the SRT, and the SRT departing from Seoul Station will be on average about 10% cheaper than the KTX. However, KTX tickets sold at a reduced fare will not accumulate loyalty points. Why are there two high-speed train systems? For many international observers, the existence of two high-speed train systems in South