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The federal office of road safety administers the Australian design Rules which are applicable for all state and territories in Australia.
Ontop of that, each state / territory has their own additional interpretations that add further requirements.
In my state, NSW, the ADRs take precendence but the RTA of NSWs rules generally add to the ADRs.
I have all of the ADRs on CDROM. If you want more info PM me and Ill see what I can do to help.
Cheers
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