I now take a Post It pad with me when I go out of my mobility scooter. This also applies to wheelchair users. The note is attached to the windscreen of cars belonging to selfish arseholes who park across dropped part of pavement to cross the road. The message says:
"You have parked across the dropped pavement which means that mobility scooters and wheelchairs cannot cross the road. They have to turn round, find a dropped kerb to the opposite side of the road and then find another to cross back again.
We would appreciate you not parking here again. However, if I do see your car here again, I will be sticking the note to your windscreen with superglue.
Have a nice day."
I've not had to carry out my threat re the last paragraph and probably wouldn't but they don't know that. 