GTR, Siemens Mobility equip Class 717 trains with updated ETCS, UK October 13, 2025 | Europe News, News Govia Thameslink Railway (GTR), in collaboration with Siemens Mobility, has completed the upgrade of its 25 Class 717 trains to the latest version of the European Train Control System (ETCS). The trai... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password