I wonder if any UK council has ever considered removing every road sign, abandoning parking restrictions, and painting over all the yellow lines?
For a month or two, just let the motorists, cyclists, pedestrians, etc, look after themselves and use their own common sense.
Of course there would be arguments when Mr Jones parks in front of Mrs Smith's garage, but these things can be sorted-out quite quickly.
However, as in certain parts of Italy where traffic regulations are seen as being 'advisory' only, things would probably continue quite happily. It would be fun to see.