Schienen-Straßen-Omnibus

[citation needed] In 1951, the Deutsche Bundesbahn ordered two prototypes from the Nordwestdeutscher Fahrzeugbau company in Wilhelmshaven.

Shortly afterwards, three series of vehicles followed; one was presented in March 1953 at the International Motor Show in Frankfurt am Main.

It was the only connection with the railroad bus that received its own timetable in the coursebook of the Deutsche Bundesbahn under number 426h, and was marked with a special signature on the attached map.

The route ran from Koblenz to Betzdorf via Dierdorf, the Engers-Au railway line to Au (Sieg), and farther on the Siegbahn.

[citation needed] The Wutach Valley Railway was built for strategic military reasons.

The response to its operation was negative, as ticket prices were based on route length, not on airline distance; traffic on the street was faster and cheaper.

[5] There were other short operations, such as from Bernkastel to Remagen via the Black Forest Railway (Baden) to Immendingen, or from May 1953 to November 1955 that ran from Waldshut via the Hochrheinbahn.

However, the approval of the Federal Railway Authority limits its use today: tunnel passages and oncoming traffic on multi-track routes are not permitted.

In the early 1940s, the engineer Talon developed a system in which a normal street bus ran on rails and was able to pull a light Decauville railcar sidecar.

At least one of these vehicles powered by wood gas was used in the summer of 1943 on the 54 km (34 mi) long railway line from Carcassonne to Quillan.

[7] Railroad buses were also developed in Japan, by JR Hokkaido in 2002, under the name DMV (Dual Mode Vehicle).

[8] The DMV920 model no longer used external bogies, the two axles that are carried along are only lowered on the single rail.

The conversion was delayed due to the COVID-19 pandemic and further modifications required by the railway safety authority.