Queensland, being the second largest (by area) state in Australia, is also the most decentralised. Hence the highways and roads cover most parts of the state unlike the sparsely populated Western Australia. Even Queensland's outback is well served as it is relatively populated.
Road quality varies from 8-laned Pacific Motorway linking Brisbane–Gold Coast to earth-packed outback tracks, reflecting the great diversity of its terrain and climatic conditions. The route markings are also unique in the sense that Queensland uses all available schemes, from old-style National Route scheme and the blue-shielded State Route scheme to the latest alphanumeric numbering scheme and the Metroads metropolitan route numbering scheme.
