> Practically speaking, keeping 100% of the ice off of even well-used sidewalks 100% of the time all winter long isn't going to happen.
Again, it's a matter of infrastructure and priorities: https://youtu.be/Uhx-26GfCBU?t=260
> There's also a safety issue in that if you're in that kind of cold for long enough, it'll kill you, jacket or no jacket.
In any situation where being outside for the time a commute could take would kill you, roads wouldn't be safe to be driven on.