Complex sentence: VicRoads previously derived authority from Part III of the former Transport Act 1983, with the Corporation being re-established from 1 July 2010 under the Transport Integration Act.
Split into simpler sentences: VicRoads previously derived authority from Part III of the former Transport Act 1983. The Corporation has since been re-established from 1 July 2010 due to the commencement of the Transport Integration Act.