Tractor trailer roof snowplow - GIF

Tractor trailer roof snowplow.

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Previously:

1890 Coudersport and Port Allegany snowplow train- photo
1923 steam-powered rotary snowplow - GIF
Hall Scott powered Oshkosh vintage snowplow - video
Horse-drawn snowplow - photo
Model snowplow train - video
Remote controlled snowplow - GIF
Snowplowing a street without blocking driveways - GIF
Snowplowing train - GIF
Steam-powered snowplow
Towed tilting snowplow - GIF
Union Pacific snowplow train - photo and video

On what planet do they use these?! I can't tell you how many times I've braked and dodged snow and ice flying off trailers on the highway!

I don't know what kind of location that is, but I can see where snow should be removed before being weighed at a weigh station.