Where I live it’s common to spread gravel on the snow to increase grip. And then, of course, it is expected that everyone has the appropriate shoes and bike tires to not slip.
And even when salt is used, cars need a lot more salt per person than other modes of transport does.
There was plenty for everyone since there were a lot fewer people, plus there were no real territories that people claimed over longer periods at all since we were nomads.
Crossposting wouldn’t make much sense here since the title would be a bit unfitting. I suggest you create a new post and set the image link (lemmy.ca/…/6a0a9d34-6926-4972-9dd5-23a48a735020.j…) as the URL.