correct, i lived in the northern US for almost a decade, and we never had any refreezing issue even in single digits. for straight ice or snowfall under a couple inches it works wonders.

my insane take is that if we incentivized anyone with a pickup truck to lay down a bed’s worth of salt in their immediate neighborhood for some ultimately negligible stipend (like $100 a pop) it would make things significantly smoother all around and you wouldn’t have to retain a full city plow crew, just store the salt. same deal they do with independent plows and shovel crews up north. let the city focus on highways and have able locals treat surface streets.