Trensurb awards rolling stock maintenance contract to Alstom March 19, 2015 | Latin America News France-based Alstom has signed a EUR2-million contract with Trensurb, the Porto Alegre regional metro operator, to provide preventive maintenance for 15 metro trains for a period of 5 years. The train... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password