But that's what I'm saying. The traffic wardens happily ticket car drivers but I've seen them numerous times walk right past the big lorries that are parked illegally.
Funny that I once got a ticket on double yellows in London, not from a warden he was ok (in so much as he said whilst hes not there), but a camera, however I had no choice as as some of the crates were 1/2 a ton or so and I had to hi-hab them off. Having informed the office I didn't pay the fine either, and no I wasn't parked on the pavement, they are not designed to support the weight of trucks and services can be damaged, I also had power to have parts of the national grid or local network shut down, if a delivery would be close to overhead cables, electricity when its wet can jump quite a distance, and did many delivery to substations ect, it only ever nearly happened once.
As for controlling traffic, anyone can for the sake of safety, I also wish car drivers here would stop blocking the lane to the house as a fire truck could not get up if need.