Diesel locomotive were classified as DET 1 and DET 2 (). Due to shortage of petrol products during World War I, they remained unused for regular service in Germany. In 1922, they were sold to Swiss Compagnie du Chemin de fer Régional du Val-de-Travers (), where they were used in regular service up to the electrification of the line in 1944. Afterwards, the company kept them in service as boosters till 1965. Fiat claims a first Italian diesel–electric locomotive built in 1922, but little detail is available. A Fiat-TIBB diesel–locomotive "A", of 440CV, is reported to have entered service on the Ferrovie
Victorian Railways S class (diesel) Victorian Railways S class (diesel) The S class are a class of diesel locomotives built by Clyde Engineering, Granville for the Victorian Railways between 1957 and 1961. The S class was based on the Electro-Motive Diesel F7 design and were very similar to the GM12 class then being built by Clyde Engineering for the Commonwealth Railways. They were mechanically similar to the 1952 built double ended B class. The first order for 10 locomotives, were progressively delivered between August 1957 and February 1958. The first four took the names and numbers of the recently scrapped S class steam locomotives, with