Well, obviously we'd need to make sure true Brits were able to continue parking as recklessly as they like, having implanted in the memory they'd always been this thoughtless and anti-social and in no way was it the passive-aggressive result of the ever increasing number of injuries suffered from life's slings and arrows showing no sign of slowing down, despite their recent revelation that they are, and had always been, members of the chosen race..
I'd propose some sort of sticker for their cars, notifying service workers and other ethnicities that they bear the responsibility for ensuring there are no additional delays.
Probably it's easier to scrap ambulances altogether! Running to the hospital would do a lot of obese lazy types good. This being an inner city problem, I would also suggest we would be justified in banning young non-white people from driving.
Also no more cycling. It's a very European thing, needs scrapping.