I would be worried about collision safety though, I am not going to persuade everyone in my neighborhood to stop using cars in a hurry and there are not bike routes between me and school, library, shops, ...
People use cars because they are (rightly) concerned about safety. People avoid using bikes because there are so many cars. It’s very hard to ban cars or restrict car usage because it seems like no one wants to use bikes, but it’s a self-reinforcing system.
Then the cars are safer both for the occupants and pedestrians/cyclists, so paradoxically people might be more inclined to walk or cycle.
Aggressively limit speed and enforce it until you're onto the fast roads.
If cars could only roll on at 10mph I'd feel a lot safer and I'd probably be able to use my bike and make better time for the local stuff.
Making adjustments to roads requires some upfront capital and scales to every car on those roads.
Check out this great resource of traffic calming measures from the Institute of Transportation Engineers[1].
Chicanes, Chokers, and Corner Extensions are just three examples of measures that can be taken temporarily and cheaply.
1: https://www.ite.org/technical-resources/traffic-calming/traf...
One unexpected benefit is that the muddy/wet boots don’t muss up the bike like they would if I was loading them into a car. Just drips out the bottom grate.
Lots of other small benefits but not so related to winter.
Stockholm January average: 25°F / –4°C (low) to 32°F / 0°C (high) — closer to Chicago than Minneapolis.
Having been splashed by busses in winter you have to be a special kind of crazy to ride a bike or motorcycle in Minneapolis or Chicago.
There is usually a week in January in Minneapolis where the high temperature for the day does not break -10F. Air temperature, not wind chill.
Minneapolis at least has a skyway for pedestrians in winter. Chicago loop, not so much.