Almost correct Yorkie, the Council had permitted footpath parking out of the way of pedestrian traffic. As Council is known to do, they changed their mind and gave a couple of days notice that the rule was changed. Some how the riders (as you stated ) got organised and on the start day took nearly every parking spot in the CBD before the cars got in to town.
Mass confusion as folk tried to find some where to park the gas guzzlers. Next day, footpath parking was again permitted. 
G'day Brock,
as you said we did that parking motorbike/scooter thing quite a few decades ago in Perth. (back in the early/mid 1960's sometime ???) Took about a month getting that organized - no internet and not everyone even had a telephone in their house !
Hay and Murry streets where open to traffic and general parking, so we 'targeted' every single parking bay we could find all that morning.
AH ! Such memories of those 'good old days'.
No 'bikie' gangs or 'colors' back then either !
Started out to ride an ex-police BSA A-10 Golden Flash. 650cc twin. Cost me a whole 80 quid ! Crashed and/or broke more than a few BSA's, Triumph's (a dozen) one AJS, two Matchless 650's and a Norton International 500cc single OHC beast, (including 2 X BSA's and a Kawasaki W1 650 BSA clone in less than a week while on R&R May '68.) before buying my first BMW, an R69S, in 1969. Traded the BMW in three years later for my first Honda CB750 K2. (STUPIDITY OF YOUTH !)
About the only motorbike parking area in the center of Perth was outside Mortlock's motorbike shop, R.H.S. of Hay Street up just before Milligan Street.
Motorbikes and scooters started arriving on Perth city streets and taking over ever available parking bay from about 7am. that morning.
We got warned by the 'grey ghosts' that while we where not breaking the law, they wouldn't tolerate any of us overstaying the parking time limit on the parking signs.
Whenever the time was almost up, the rider would stand out on the road side of his bike / scooter as a signal to any other passing rider to pull in and take over that parking bay.
Don't remember who organized it but it was successful alright, frustrated the hell out of the car drivers.
Pommie bikes, mainly Triumphs and BSA's where by far the most common bike on Perth's roads.
Vespa and Lambretta scooters where about it for the motor scooter brands.
The typical motorbike riders clothing was simply a T-shirt, pair of jeans, fur lined flying boots, a pair of leather gauntlets. Option of half a jar of Brylcreem or your hair full of engine oil from your leaky pommie bike.
Skinny, hard, tires that only just managed to grip even a dry road. Usual only a single leading shoe 7 inch drum front brake. Cables for brake and clutch operation. The less said about their 'handling' or mechanical reliability, the better !
GOD only knows how ANY of us survived those days !
As pay back the City of Perth promptly passed their by-law that motorbikes could no longer occupy a marked car parking bay even if we paid for it.
Take care
Flip
