In Chicago? Like, in the city proper and not the suburbs? I've lived most of my life in Chicago, and it's basically unheard of to get pulled over for a traffic violation.
Lately, blatant disregard for traffic laws in Chicago has gotten so bad that it's a little terrifying. It's become a common thread on the r/chicago subreddit with regular posts pointing out how bad it's gotten and how police never stop anybody.
Here are two posts from yesterday alone:
https://www.reddit.com/r/chicago/comments/tzyrmn/red_lights_...
https://www.reddit.com/r/chicago/comments/u0x3sd/im_getting_...
EDIT: Wanted to point this out b/c I think it's a larger problem in general of people not following rules of the road, not isolated to specific cities.