On the Westbahn in turn, the Stadtbahn trains were replaced after the First World War by the so-called Purkersdorfer commuter trains, but only in May 1931 did these begin operation. This shuttle service between Hütteldorf-Hacking and Unter Purkersdorf existed until May 27, 1972. In 1944, for example, this relation was listed under the stand-alone Kursbuchtabelle 459e, with a rigid 30-minute cycle over the entire operating time. At times, it even drove every 15 minutes. Meanwhile, the Hütteldorf Neulengbach section of the 1952 electrified Westbahn is served by the S50.