Thales UK upgrades CBTC system for DLR; Swedish railways evaluates TagMaster’s RFID March 25, 2010 | Europe News Thales UK, a subsidiary of France-based transportation technology provider, Thales, is upgrading the communication based train control (CBTC) technology to match the upgradation taking place on the Do... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password