Metropolitana di Milano, Italy May 1, 2022 | Europe Project Update, Project Update Developer: Azienda Trasporti Milanesi (ATM) is the developer of the Metropolitana di Milano/ Milan Metrorail Project. Metropolitana Milanese manages the construction. The Metro 5 S.p.A. consortium of ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password