When we lived in Aberdeen we always reckoned that it was the worst place in the country for not indicating. Yes, it's infuriating, both when you're driving and also when you're a pedestrian, as you need to know if a car is coming round the corner before you cross (pedestrians have right of way? Aye, right.) I sometimes point in a meaningful way at an indicator which has not been used, as if there is something wrong with it (well, there is) and that sometimes earns a worried look from the careless driver. It's not as if it costs you anything to use indicators or lights when it's getting dark, come to that!
You must have got quite a fright, Nonu. Have a !