Re: 1st world problems.
If your first impression after seeing the sign was "that car has spun around", then the sign has succeeded.
Signs aren't pictures, they're intended to convey an idea quickly, and unambiguously. Some signs don't seem to much sense if you analyse them, but the "odd" choices are there for a reason: "Food available" shows a spoon-and-fork because the more "obvious" fork and knife looks like a crossed-out fork at a distance, or "no food available". The bellows-camera is like that because no other sign looks like it, and it is recognisable as a camera. Same goes for the "choo-choo" train. The skid is missing tracks because showing two more of them adds visual clutter and obfuscates the meaning.
If you want a genuinely dumb UK road sign that needs changing, I would nominate this: http://www.key.co.uk/img/W/KEY/nt/IC/nt-img20070322130940_101357.jpg
If you said "footpath", you're in for a nasty surprise, but it's an perfectly sane assumption to make. Especially if, as a non-driver, you're someone who has never opened a copy of the Highway Code...
It actually means "No pedestrians", and while it is consistent with the rules of the road signage system, it's inconsistent with how people interpret symbols. There's a reason why the "no left turn" and "no right turn" and "no parking" got diagonal bars through their sign designs, but for some reason, this one escaped.
(Ireland uses a slight variation of the UK signage system, but one in which all round, "prohibition" signs have a diagonal through them to make the meaning clear; here's our "no pedestrians": http://trafficsigns.ie/rus-038/ )
My favourite UK sign-trivia is about the "School children" sign used in the UK: In the original international signage design, this sign depicted an older boy is leading a younger girl ( https://image.shutterstock.com/display_pic_with_logo/60395/60395,1217349674,4/stock-vector-warning-children-on-road-sign-illustration-15493621.jpg ), but the UK version has an older girl leading a younger boy ( https://static.independent.co.uk/s3fs-public/styles/article_small/public/thumbnails/image/2016/05/09/08/children-road-sign-new.jpg ) because Margaret Calvert, who designed the signs, used to accompany her sometimes unwilling younger brother to school. That's about as close as a road-sign designer can get to self-portraiture, I think...
(Many countries now mix and match the "big-sister" and "big-brother" versions of this sign, but the UK exclusively uses young Master Calvert being dragged to class by his big sister...)
Biting the hand that feeds IT
