The Western Sydney Orbital (WSO) is a proposed motorway 40 kilometres long , extending from the Hume Highway/F5 Freeway/M5 Motorway at Crossroads/Prestons in the south to the M2 Motorway at West Baulkham Hills in the north. The WSO is proposed to become part of the National Highway System in Australia, replacing the congested Cumberland Highway as the route through Sydney. In addition, the WSO aims to improve traffic within western Sydney by connecting Sydney's existing motorways (the M5, the M4 and the M2) and thereby completing a large section of the Sydney Orbital Road Network. The RTA has prepared this Representations Report. It responds to the representations that were received and outlines modifications to the Proposal in order to mitigate the environmental impacts. It also provides a summary of mitigation measures and other commitments.