Here’s one. When the road narrows from two to one lane due to construction. People here think you’ve got to merge as soon as you see the warning sign. They get angry if you stay in the left lane up to the merge point. But the highway authorities tell us, and now they actually put up signs here, that tell you to use both lanes and take turns at the merge.
I'd love it if they'd actually do that. What, in reality, happens, is that every one moves over early, which, when done correctly, actually goes smoothly. Then, some a-hole with an "I'm better than you" mentality screams up the now-empty lane to cut everyone else off. Then everyone else is pissed, and slamming on the brakes because someone couldn't wait. I much prefer the zipper method, but what we have most is the dip method.