Special licence plates
The Wikipedia article on Australian licence plates highlights some special prefixes, but here’s a list I’ve tried to come up with that includes others they don’t show, from personal observations and gleaning information from the VicRoads web site.
Some of them are clearly abbreviations for what they are… some not so much.
AO (suffix) – accredited bus
CC – Consular Corps
E56 – trailers
HDV – horse-drawn vehicle
Mxx – state vehicles, such as (marked) police cars
M – metropolitan Melbourne taxi
U – Geelong, Ballarat or Bendigo urban taxi
PS (suffix) – peak period taxi
ST – substitute taxi (replacement for regular taxi which is out of service for repairs)
C – country/regional taxis
TOW (prefix ) / TT (suffix) – tow truck
VHA/VHB/VHC – hire cars (eg chauffeured)
S000 to S999 – hire motorcycles
I particularly like HDV.
Are there others?
