The people who seem to be in such a hurry that they are weaving in and out. Alot of these people like to see how soon they can get back into the lane. Afraid that if they stall, or loose a tire, they will get run over.
I was car racing back in Europe for few years, and My partner crush so badly when I read map and navigated him. Accident won`t scare me like new drivers. About 14 years ago I trained new driver, and instead of staying on freeway he took ramp with speed
65 MPH. I woke up holding shifting pole in my hand. Since that time I`m scare driving team or train new drivers.
I got a uncle in canada that had that happend to he was doing about 65 and the guy was drunk and just got in a fight with girl friend and just stepped out in front of him on the highway. My uncle was driving a cabover pete it put a dent in the front of the truck were the guys head hit and they said it took like 6 hours to clean all the body parts from under the truck.
My worst fear is always that a car is going to get into my blindspot when I'm making a right hand turn. I do my best to position the truck so this won't happen, but there are always those who want to sneak up over the shoulder or do whatever it takes to get in there.
I am always afraid of people stopping to fast and running them over. People forget how long it takes to stop a truck running 60 mph. People should have more respect for truckers and for motorcyclists for that matter.