State government authority that builds major roads, promotes road safety, manages traffic, regulates vehicles and licenses drivers.

Official site. Includes conditions and construction.

Includes information on the National System as well as routes in various states. Includes photographs.

Manages the Queensland state road network. Includes information on the Pacific Motorway, Brisbane's toll roads, and its traffic management system.

Details public transportation, safety regulations, and policies for providers.

Roads and licencing authority for South Australia. Includes information on the Southern Expressway extension and the Port River Expressway.

Covering transport information and services around Tasmania.

Owners of the CityLink electronic toll road network in Melbourne.

Victoria's highway department.

Part of the Sydney orbital network, opened in late 2005. Toll information and maps.