I'm not sure whether this phenomena occurs in other countries, but it most certainly happens here in New Zealand. You know when one lane of a road ends and two become one? Yes, merging lanes. People here simply cannot merge. I don't know whether it is sheer stupidity, an inflated sense of self importance, ignorance or just plain ol' bad driving, but people in New Zealand don't know how to merge.
Perhaps you've experienced this too, when the person you're supposed to be merging in front of, just drives straight up beside you to try to jump the queue. I swear it happens to me every time I encounter merging lanes in traffic, some asshole thinks they deserve to be in front of everyone else and refuses to merge until they have to make the choice between conforming, or driving into a concrete wall. I would be very interested to know if this occurs anywhere else in the so called civilised world.