Today's BWOTD refers to something you see everyday:
"I accidentally hit a bollard in town"
'Bollard' = a small concrete or metal post that stops drivers entering certain areas
I understand that you call these pylons! Well a pylon to us is a huge metal tower that carries the national grid power lines, I'm not sure if you call those pylons too?
I am not a lover of bollards, having at least twice wrapped cars I owned either around them or reversed into them! On one occasion I turned too early and didn't see the darned thing, until I heard it crunch into the passenger door of a car I had literally just picked up from the dealer - luckily it was a company car!