Australian Vehicle Standards & Regulations
Please find a collection of Vehicle Standards Information, Regulations & Guidelines from each Australian State & Territory government pertaining to Vehicle Warning, Flashing & Emergency Lights, the Colours they represent and the intended Fitment for use.
There is a specific NHVR document for National Heavy Vehicles in Australia.
Please note that for the most up to date information, you may check with your respective State or Territory Roads & Regulation Authority. The Police are there to enforce the law, whilst government and Department of Transport & Roads would be responsible in creating such guidelines and legislations.