Tractors and other heavy vehicles with ploughs attached drive around clearing the streets and cute little machines clear off the footpaths, both leave a trail of gravel behind them to increase traction. The ploughs leave great piles of snow where ever they can - creating at times huge snow mountains that are there to be climbed by little people! And it is funny to see the hedges of snow lining the footpaths.
Vägverket has a policy dictating how quickly the roads are to be cleared.

Yellow roads - as above but within 3 hours.
Green roads - 2cm and 4 hours apply.
Blue roads - when they have 2cm of snow on them the ploughs have 5 hours to clear them. Five hours after the last snowfall the roads are to have no more than 2cm of snow on them. Ice is treated with sand/gravel (not salt).
Grey roads - when they have 3cm of snow on them the ploughs have 6 hours to clear them. Six hours after the last snowfall the roads are to have no more than 3cm of snow on them. Ice is treated with sand/gravel (not salt).
This policy applies to the entire country - you can look to see what colour the roads are in your region on Vägverket's website.
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