I live in Seattle where I drove for 41 years, and then move to Kentucky where I’ve driven now for 13 years. The problem it seems to be someone unique for Kentucky drivers is they don’t use their turn signals. The problem in Seattle was that people would get on that thing freeway and make a beeline for the passing lane and then camp out there at whatever speed they were going. They get out of your way in kentucky. Well at least for the most part.
Having lived all over the world I can say with the upmost confidence that the worst drivers in the country drive in Louisville. The drivers in Saigon drove better. I saw things there I’ve never seen anywhere else. As soon as you cross the city limits they go totally stupid. For the most part, turn signals are an optional piece of equipment and many don’t buy that option.