RATP to invest EUR1.8 billion in 2012 January 17, 2012 | Europe Finance French transport operator Régie Autonome des Transports Parisiens (RATP) is planning to invest EUR1.8 billion in 2012. The funds will be used to replace 49 trains operating on the RER A line with doub... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password