Summers day on a country road going out towards Charlbury, nice twisty road, loud engine noise coming toward us, MGB sideways on, part on verge rounds corner and luckily stays (just) on its side of the road. Doesn't stop, fortunately
Flags when it comes down to it are what you prefer, maybe they tell the unconvinced that you are trying to be seen, doubtless (like helmets) some people might give an instance of where it saved their life but in the end there is nothing that stops a complete idiot from parking on top of you when that is what fate decrees, I will do what I can to convince fate to smile benevolently on me but