CBTC and telecommunications systems bidding process suspended for CPTM Lines 10 and 11, Brazil October 21, 2022 | Latin America News, News Companhia Paulista de Trens Metropolitanos (São Paulo Metropolitan Trains Company/CPTM) has suspended the bidding process for the supply and installation of communications-based train control (CBTC) s... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password