The electrified network was completely separated from the rest of the railway network from 1925 and instead linked to the urban tram network at two points by the mixed operating line 18G. Used - also in the pure Stadtbahn traffic - classic two-axle tram cars, which were considered over the decades as a trademark of the electric Stadtbahn. For the 450 engines and sidecars purchased at that time, the new operator built three new operating stations in Michelbeuern, Heiligenstadt and Hütteldorf-Hacking and hired 823 new employees for the new company branch.