Steamroller
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Steam_engine_Lausanne_2.jpg
Steam_engine_Lausanne_2.jpg
A steamroller is a type of heavy machinery which consists of a large tractor and a heavy cylinder that sits in front of it and functions as the front wheel. Steamrollers are generally used in paving roads, to flatten out the surface.
Many steamrollers are preserved in operating condition, and can be seen in operation during special live steam festivals.