For service on suburban and secondary lines, but also for light express trains, the BBÖ got 20 tank locomotives of the type DT 1 starting in 1935. Having a luggage compartment, their designation stood for “Dampftriebwagen” (steam railcar). Since they were mostly used on rural lines, they also got the nickname “Dorftrottel” (village idiot). The Slovenian Railways also ordered six similar, slightly heavier locomotives.

They had the wheel arrangement 2-4-2T, with a long driver wheelbase and both leading and trailing axles in Bissel frames. The weight distribution could be switched between a maximum axle load of 13 and 11 tonnes. The first ten were built as oil burners to enable one-man operation, but were later also converted to coal firing.

The DT 1 was often used in “Pendler” trains in the center of a maximum of four two-axle passenger cars, what allowed them to run in both directions. Apart from being used as the locomotive in light express trains, they were also used as heating locomotive, towed behind an electric locomotive in a heavier express train. This was necessary because World War I had brought many passenger cars into Austria which had no compatible heating or braking system for modern Austrian or German electric locomotives.

The Reichsbahn made them class 71⁵. In this time, some were stationed at Munich or Rosenheim. After World War II, all 18 which were still existing came back to Austria. In the ÖBB, they now became class 3071 and were withdrawn in 1968. Today, DT 1.07 is being preserved and located at Strasshof.

For the branch line between Gortatlea and Castleisland in Kerry County, the GSWR had two vehicles built in Inchicore in 1890, which can be described as precursors to the steam railcar. Since commercial traffic with regular passenger trains could hardly be carried out on the line, an extra light tank locomotive was combined with a passenger compartment. However, according to Locomotive Magazine, issue May 1903, the passenger compartments were not actually used for their intended purpose.

Later the locomotives were moved to the Fermoy-Mitchelstown line in Cork County, which used a very light rail profile, only 50 pounds per yard. While no heavier locomotives could be used there, the axle load of the two vehicles was low enough. Here they had to conquer gradients of 1 in 60. The passenger compartments were soon removed, allowing the locomotives to be used as conventional tank locomotives. They spent the last years of their service as shunting locomotives in the port of Cork.

The LB&SCR commissioned a small tank engine in 1869 to haul light passenger trains on the branch line between Brighton Central and Kemp Town. The locomotive was initially given the number 96 and the name “Kemp Town”. In 1874 it was transferred to Havant near Portsmouth and given the number 115 while she was named “Hayling Island”.

In its new location it soon underwent a makeover to plans by William Stroudley, incorporating a new chimney, larger steam dome and cab. During this time the running number changed twice, first to 359 and then to 499.

A major remodeling was also carried out under Stroudley in 1889. A passenger compartment was installed behind the driver's cab for inspection trips along the routes of the LB&SCR. To carry the additional weight, a trailing axle was attached at the same time, which, like the leading axle, was fixed in the frame. In this form, the locomotive received the number 481 and the name “Inspector”. Its service in this role lasted for at least a decade.

The “Ne-Ha-Sa-Ne” was an inspection locomotive of the St. Lawrence & Adirondack Railway used by their president W.S. Webb. Originally it had been built in 1896 by Schenectady as a generic 4-4-0 for the Fall Brook Railway Company, but in 1899 it was damaged in an accident. After that, it was sold to its new owner and rebuilt for its new purpose.

The passenger compartment had enough space for six chairs and was finished with mahogany and carpet. The locomotive had also enough power to haul Webb's private car that weighed 120,000 pounds. However, it wasn't used by Webb for long and was soon sold to the Central Railroad of Pennsylvania.