I sympathise with you, cassa333. If drivers observed regulations life on the road would be more pleasant for everybody. I once heard it said that everyone who drives has a reason for doing what they do, even though for the person who's behind them it's difficult to fathom! I have a notoriously short fuse, but I keep it (more or less) under control when I'm driving, because I now think, "Well, what does it matter? In a few minutes I won't see him/her again, and it isn't my job, anyway, to enforce the rules of the road." Count to ten (or however many it takes)!