The dissolution of the commission for traffic facilities in Vienna in 1934 finally sealed the existence of the original steam railway. As a result, the municipality of Vienna also took over the infrastructure of the electrified network, which was henceforth licensed only as a small train without freight traffic, while the suburban line then completely fell to the state railway. The Second World War hit hard, especially in the last year of the war in 1945, the electric Stadtbahn, they could not be completely reactivated until 1954. At the latest in the 1960s, the Stadtbahn was subject to a modernization backlog, because the subway planning came at that time only slowly. It was not until 1976 that the first Stadtbahn section was converted to subway operation. On October 7, 1989 ultimately received the two belt lines G and GD, the sign of the last two Stadtbahn lines ever, the new line signal U6. Thus, apart from the remaining infrastructure, the history of Wiener Stadtbahn ended after more than 91 years.