Siemens Mobility to install CBTC system on Salvador Metro Line 1 extension, Brazil May 6, 2021 | Latin America News Germany-based Siemens Mobility has secured a contract from Companhia de Transportes do Estado da Bahia to install a communications-based train control (CBTC) system on an extension of the Salvador Met... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password