Ansaldo STS to provide CBTC for Paris Metro Line 6 April 8, 2018 | Europe News Ansaldo STS has secured a contract from Régie Autonome des Transports Parisiens (RATP) to implement the open control of trains, interchangeable & integrated system (OCTYS system) communicat... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password