St Louisian here and I am not at all surprised to see my city in this list. I've lived all over the country and driven in most of our biggest metros but StL is by far one of the craziest places to drive that I've ever seen. People drive like assholes in a lot of big cities (looking at you DC metro) buy they are at least somewhat predictable and respectful of basic laws. Here it is literally the wild west.
They will run stoplights and signs regularly, just about every time I'm in the car I see it at least once. And it's not just squeaking by right after it changes, it's egregious-as in traffic has started in the opposite direction and some jackass comes flying through the intersection like they don't even see the light. But its worse than that- I've seen people go the wrong way on one-way streets, drive in the opposite lane of traffic to pass, turn left across multiple lanes of moving traffic from the far right lane and using closed off construction areas as shortcuts. Pedestrians and cyclists have been hit several times in my neighborhood by drivers who were ignoring basic driving laws. It's not just randos either- city vehicles, school busses, and cabs do this crap. They aren't just asshole drivers- they are reckless and entitled and unpredictable.
What makes the problem worse is that a huge number of people just don't get their cars registered at all, and drive without tags or with years old temp tags with no repercussions. This also means they are uninsured, so it's on the insured folks to cover any accident damage.
My insurance rates jumped about 30% when I moved here and I didn't understand why at first but I do now. I love St Louis but I hate driving here.