-Drivers who don't use signals. I've had many scenarios that a light would just be turning green as I'm pulling up, so I'll go for a pass as the cars are still stopped, and sometimes, I'll get a guy with no signal, making a right turn, and then honks while they slam on their breaks. I'll simply say "use your signal next time" and keep pedaling.

-People who will cut you off to make a turn 5 seconds earlier, then slam their breaks in front of you because they're going too fast to make the turn

-People who honk simply when you're on the road. I've had a bus behind me honking and the guy pointing for me to get on the sidewalk when I was in a legal spot and had the right of way. He probably kept honking for about half a minute before he switched lanes and passed me. You can't honk me onto the sidewalk.

I have more, but those are the ones I can think of off the top of my head.

Edit:

- Pedestrians walking in the bike lane
- Other cyclists biking against traffic

I handle both of these the same. Once I know they've seen me and we've established eye contact, I accelerate as hard as I can and they generally get the message and jump out of the way before I get to them.