Highways in New South Wales

The present highway network in New South Wales, Australia was established in August 1928 when the Main Roads Board (the predecessor of the Department of Main Roads, Roads & Traffic Authority and Roads & Maritime Services) superseded the 1924 main road classifications and established the basis of the existing New South Wales main road system. (the full list of main roads gazetted appears in the Government Gazette of the State of New South Wales of 17 August 1928).

Source: Wikipedia — Highways in New South Wales (CC BY-SA 4.0)