I haven't thought about it, but I'm 99.9% sure there won't be snow on rail tracks. See flowers for example, they also "reject" snow.
EVE Online characters:
Daedalus II ex-CEO TOGOA, Daedalus III slave of Daedalus II
Little Molok Asura Engineer
"Each day I don't get an attempt on my life by a robot from the future I see as a personal failure"