Not just in Oz
I once watched an outsized load - some sort of big pressure vessel - being manouvered through the middle of Saint Albans, here in the home counties of Blighty. It probably wasn't outsized at all by Oz standards, but this is an ancient town centre with listed and very valuable real estate on both sides. Moving awkward buildings out of the way, intentionally or otherwise, was definitely not an option.
It was preceeded by a flotilla of police vehicles, checking the route, and a parking enforcement vehicle, that lifted anything parked where it shouldn't have been out of the way . The big load crawled along at about walking pace, leaving a trail of devastation. OK, I exaggerate. Its driver really was very skilful, even inch-perfect. It left a couple of depressed kerbstones on one corner, and the gas and water companies were rather busy digging up that road in the weeks thereafter.
By the way, somewhere in the Midlands is a graveyard of huge steel cylinders. They're failed precision castings for paper-making machines. If the surface has any imperfection, the cast is a reject, but it's so friggin' huge and strong that no-one knows how to chop them up for recycling. So they are towed off as outsized loads, just as if they were perfect, and unloaded ino a field to rust in peace.