GTX-A opens in KoreaExpress commuter services now operating between Suseo in southeastern Seoul and Dongtan in Hwaseong City. Photo Credit: President of KoreaExpress commuter services now operating between Suseo in southeastern Seoul and Dongtan in Hwaseong City. Premium Subscription Required You must be a premium subscriber to access this content: View Subscription Options Already a subscriber? Log in here Categories: Asia, Commuter Rail, NewsTags: GTX, Korea, Premium, SeoulMore on this story Agreement signed to speed up GTX extension projectsFebruary 23, 2024 Works starts on GTX-C commuter line in KoreaJanuary 26, 2024 Testing due to begin on first section of GTX-A line in KoreaDecember 5, 2023 Tunnelling completed in Seoul for GTX-A lineJanuary 5, 2023 Winner of Seoul GTX-B construction contract announcedJanuary 18, 2023