Camper Mog, built for the Netherlands Train Authority to work on remote signal towers, not only had the drop-down railroad wheels, but also had a plunger-type device in the center.
The idea was that you straddled the tracks, then dropped the plunger in the middle of the tracks, then pushed the 8 tons of truck--must have been some fine engineering in that pivot--clockwise or counterclockwise 90 degrees, then retracted the plunger and the Mog settled on the wheels.
So unlike the vehicle in Australia, you didn't need any kind of established crossing to easily get the Mog on the rails.
UNIMOGS on rail wheels were used by many European railroads, with some being used equivalent to switch engines, towing a string of railroad cars. We never did figure out the official towing capacity of Camper Mog, but something around 40-50 tons might have been in the ballpark. (Each your heart out, Ford SuperDuties
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