My traffic pet peeve is when driving and approaching an intersection where I have the total right-of-way.
A car, on the side street, coming to one of the stop signs stops early. Then, when I am withing 50 yds of the stop, he/she decides to quickly move ahead to fill in the space.
They don't realize what the thru driver sees. My brake foot automatically clamps down hard when seeing this....I don't want to take the chance.