[4] Up until 1966 South Australian plates were all numerical, and were subject to re-issue, in either nn-nnn or nnn-nnn format, white on black background.
Cars: S000·DEK Trailers: S000·TLY Motorcycles: S00·CBM EzyPlates is administered by the Department for Infrastructure & Transport.
These seem to follow the New South Wales Premium format, using black lettering on a white background on a noticeably slimmer plate.
As of 28 September 2009, there is a new addition to the premium range – white on black base, from XX-000A onwards.
Since September 2007, The heavy vehicle series commenced and the format used is SB·00·AB with the legend SA – HEAVY VEHICLE, the trailers start at SY·00·AA No general issue SA registration plates (other than government) are issued with the letter Q anywhere in the combination.
[4] It is also possible to obtain a wide variety of vanity plates that feature full-colour illustrations and customised logos or slogans.
S-nnn-aaa series: AAQ, ABQ up to DDQ, ARA-ARZ, CIA-CIZ, BQL to BQZ.