You people are just gonna pull out all my peeves, aren't you?
Drivers who turn right on red where signage prohibits it.
Drivers who
don't turn right on red where it IS allowed.
Drivers who ignore stop signs.
Drivers who treat yield signs as stop signs.
Drivers who ignore signs, period.
Jaywalkers.
Pedestrians who push the button for the walk light, then don't wait for it.
Parallel parking on the left, even on a one-way street; not the parking itself, but the idiot who hit my stopped-at-the-light car while trying last week

Hypocritical state agencies that add a $2 "carbon" surcharge to their public parking fees, but don't give a rat's patoot about all the energy being wasted by vehicles caught in their three year repair project traffic/
Simpering PR personnel from said state agencies who proclaim to "know how you feel" about being stuck in said traffic daily for several years since they live in the same part of the state as you
but who actually do not go anywhere near the road in question on their daily commute to/from work.
Drivers who apparently believe they have the ability to safely defy the laws of physics and enable two bodies to occupy one space.