I agree with most of the peeves listed and will repeat a few but here's my list (I have a bunch)...
#1. Without a doubt... people who drive slowly in the left lane or people who just cruise in the left lane on a highway. The left lane is the passing lane not the cruising lane. I feel like Ohio drivers are the worst about this. It's become a joke when I'm out of state, I'll come up on a car cruising in the left lane and say "bet they're from Ohio" and 8 out of 10 times they are. Doesn't matter if I'm in the Carolinas, Tennessee, Pennsylvania, etc.
2. People who drive at dawn, dusk, in fog, and/or rain without their headlights on. It's 2022. Aren't most cars equipped with automatic headlights? I drive to work shortly before sunrise and am often on the road around sunset. I can't believe how many cars drive without headlights. If your car is gray, black, navy, etc. and you don't have your lights on most people probably can't see you.
3. People who slam on their brakes to make a turn BEFORE they activate their turn signals.
4. People who almost come to a complete stop to get into a turn lane. Isn't part of the reason a turning lane exits is to give you time to decelerate before making a turn but not slow down the cars going straight behind you?
5. Mentioned early in the thread but people who pass you on the highway and then slow down when they get in front of you. I almost always use cruise control when driving on the highway. Every long trip there will be a car or two that passes me, then i pass them, then they pass me, etc. I'm going the same speed the entire time so it's you!
Finally.... for the last 5-10 years I have been actively trying to build good road karma. I will let people over, let people out, let people turn in front of me, and let people merge. Trying to live by the treat others as you want to be treated rule. I'm still waiting for the good karma to come back to me. I live in Central Ohio and I feel like no one will ever let you have an inch or let you merge. Everyone wants to be an a__ hole.
End rant.