High Quality Content by WIKIPEDIA articles! The present highway network in New South Wales, Australia was established in August 1928 when the Country Roads Board (the predecessor of the Department of Main Roads and the Roads and Traffic Authority) superseded the 1924 main road classifications and established the basis of the existing New South Wales (NSW) main road system. (the full list of main roads gazetted appears in the NSW Government Gazette of 17 August 1928). The number of a road for administrative purposes is not the same as the route number it carries e.g. the Great Western Highway is state highway 5 for administrative purposes but is signposted as part of national route 32.)