Are these conditions that typically can't be found in the Netherlands?
I guess heavy snow isn't too common there, maybe if we plowed the bike paths? Ok, now I'm getting distracted imagining a bike-path-plow, it would presumably be mounted on a powered bike of some sort, or maybe on those little parking enforcement trikes.
Bidirectional dedicated bike paths are usually at least car-sized. They will fit a regular plow just fine. Monodirectional bike lanes usually lack separation from the rest of the road, so they get plowed for free as a side-effect of plowing the car lane.
In the city where I live (which is _usually_ pretty bike friendly) the plow moves the snow from the car lanes onto the bike lanes a lot of the time :/
In Scandinavia they have an army of tiny tractors for this purpose:
https://cykelmagasinet.se/facit-finns-nu-sopsaltade-cykelvag...
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