The Roads and Traffic Authority of NSW (RTA) proposes to develop the Western Sydney Orbital. The proposal involves the a 40 km dual carriageway motorway linking the M5/F5 at Camden Valley Way in the south and the M2 in the north. Once completed, and in conjunction with the proposed Lane Cove Tunnel, the Western Sydney Orbital would complete the Sydney Orbital freeway/motorway network. The proposal is estimated to cost $1.25 billion and as part of the National Highway route is being funded partially funded by the Commonwealth Government ($350 million). The remaining funds would come from private sources and likely be recouped by the successful consortium through the imposition of a toll.