Vienna pre-metro

The pre-metro tunnels are maintained and used by the Wiener Linien, operator of the tramway lines.

One section is used as well by the Wiener Lokalbahnen (WLB), the operator of a regional tram-train service.

The first section, a short underpass of the Südtiroler Platz near the former Südbahnhof railway station, which had been in operation until 2009, was opened on May 7, 1959.

Due to level crossings at two stations, the tunnel can't be transformed into heavy metro anymore, as the Vienna U-bahn requires grade separation.

As part of the construction of the Matzleinsdorfer Platz station, Vienna's first moving walkway opened.

The pre-metro section under the Gürtel comprises a total of six underground stations and is used by four tram lines and the Wiener Lokalbahn service.

This underground tram station is popularly called Jonas-Reindl, because of its circular, recessed, but in the middle open form, after the Austrian expression "Reindl" for casserole and the former Viennese mayor Franz Jonas.