[RallyJon]

One important concept that is often lost in the discussion of "right of way" is the obligation to avoid an accident. So if someone who should technically yield to you, doesn't, you don't have any justification for running into him. If it can be shown that you could have done more to avoid the accident, but didn't, you're at least partially at fault.

So think twice before you aggressively assert your right of way. Good thing to remember when you're cock-blocking a guy trying to merge.