Tender launched for Bucharest Metro Line M4 Extension; First Alstom train delivered for Bucharest Metro Line M5, Romania May 13, 2024 | Europe News, News Bids have been invited for the design and construction of the Bucharest Metro Line M4 Extension. The extension will span 15 km, connecting Gara de Nord to Gara Progresul and will cover 14 stations. Th... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password