Traffic Wardens have often got to hit targets,if they don't ticket enough cars, they get the boot.
I'd say it's more than their job is worth to let shop owners park outside their shops for hours on end (unless it's also a private residence or there is some sort of collusion as you suggest).
Personally i wouldnt be able to sleep at night knowing that i've issued X amount of tickets to people (an caused so much misery), half of which are probably debatable.
Therefore, I think all Traffic wardens are [deleted].
