You see different kinds of bad drivers in different areas of the country.
In SC it seemed to be the Oblivious Drivers. They did not seem to be paying attention to what they were doing. The most outstanding one of those I saw in 1973 when I was driving up to my work-study job at the university. First, he pulled out in front of me from a stop sign. Then, he stopped at the top of the hill, even though the traffic light was green. Then he got stuck out in the middle of the next intersection when the traffic backed up in front of him. This was all in the space of less than 2 blocks. These are the kind of people that are driving in a lane that either is going away very soon or is in reality a row of parking spots, and you really wonder what they are going to do at the end. Decades later I watched one of those people run a SC Highway Patrolman off the road because he was so busy describing some on the Right side of the road to the occupants of his car.
In OK it was the guys who were yelling "YEEHAH!" out their window, or at least should have been, in order to property adopt the rodeo driving style. There are a lot more cattle in OK than there are people, and you can see why; their bad drivers need a lot of room.
In CA it was what some people called the absolute moral imperative to fill in every empty spot on the road with a car, never mind that it does not meet the navigational requirements of the current mission. So you need to make a Right turn in 500 ft, but there is an empty spot in the far Left lane, so go plug that hole! I presume that is why computer games involving stacking things are so popular with some people. And then there were the CA drivers who were so astonished by rain that they had to drive much faster to because it was so dangerous out that they needed to get home before they could have a wreck. I lived there 10 years but on my last trip to CA in 2001 it seemed to me the freeways had become a continuous stunt driving competition.
In FL we have tourists who apparently believe that if you get lost you do not have to worry about traffic laws. And it seems to be where the YEEHAH guys from OK go to retire.