Alstom and Pose to modernise signalling system of Buenos Aires Roca commuter rail line December 22, 2018 | Europe Company News Argentina’s Ministry of Transport has awarded a EUR90million contract to a consortium of Alstom (58 per cent) and Pose (42 per cent) to modernise the signalling system of the Roca rail line of t... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password