#1 - I've had a few truckers in the US do it to me when I couldn't tell if it was clear ahead of them to execute a pass, usually on an uphill. Hard to imagine any driver being that courteous.
Thing is, most vehicles these days come out of the factories with broken turn signals. Functioning ones aren't always used correctly either. One violation of the rules I see a LOT is when people change lanes in an intersection, turn signal or not. You can get away with it until you're in an accident.
Once most drivers get their licence, they seem to forget the contents of their motor vehicle act in it's entirety. Drives me crazy. I expect drivers around me to play by the same rule book, but apparently I expect too much.
