Speaking as an enforced pedestrian, drivers who don't indicate seriously piss me off. Do they think I don't want to be able to cross the road that bit sooner in the pouring rain? But possibly the most infuriating thing is when moronic oafs park across pavement ramps when I'm trying to make my way home with a heavy shopping trolley. Just be glad I'm not in a wheelchair mate, or I'd key your car!