I suppose what I find most frustrating is that so many people seem to have abandoned signalling as a form of communication between road users. Signalling's long been an endangered species in the area, but I followed a car through four junctions, from each 0f which the driver turned right or left and twice into a main road, and not once did they bother to indicate, presumably on the basis they considered everyone else using the road to be clairvoyant. This isn't simply lazy driving, it's dangerous and potentially fatal but for many it now appears to have become a lifestyle choice.
Personally, I'd forget the drink-drive campaigns the local police launch every summer and instead institute a 'no signals - no car' confiscation policy for a couple of weeks.