Alstom to supply signalling for São Paulo Commuter Rail Line 9 extension, Brazil January 24, 2018 | Latin America News Companhia Paulista de Trens Metropolitanos (CPTM), the developer and operator of the commuter rail system in São Paulo, has awarded a EUR11-million contract to France-based Alstom for the upgra... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password