They use a large snowplough, mounted on the front of an engine, to clear the snow off the tracks.
Unlike road vehicles, a small amount of snow is not a problem. the wheels push it out of the way.
train track
railroad
Railroad
Siding
Siding
in 1980, new trains stopped doing that but on some trains such as the HST, they still
Lubricate the track on a monthly basis.
Siding
Siding
railroad
They are not necessarily superior. Mag-Lev trains "sway" above the track and therefore they have no friction with anything other than air. Their energy consumption is less efficient and because of the massive concrete or steel track slabs junctions and other track elements are much less efficient and more expensive the traditional rail guided trains.
none