São Paulo Metro Rail Project, Estado de São Paulo, Brazil March 10, 2025 | Latin America Project Update, Project Update Developer/Operator: Companhia do Metropolitano de São Paulo (CMSP) is the developer. CMSP provides operations and maintenance (O&M) services for Lines 1, 2, 3, and 15. ViaQuatro operates Line 4 un... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password