The Roads and Traffic Authority of NSW (RTA) proposes to widen Sunnyholt Road for 1.56 kilometres from 100 metres south of James Cook Drive to 260 metres north of Quakers Hill Parkway at Glenwood. The proposal would involve the reconstruction and widening of Sunnyholt Road from two to six lanes plus turning lanes with a raised media shared cycleway and pedestrian path on the west side and a footpath on the east side. The widening would accommodate a major interchange with the Western Sydney Orbital with space for the proposed rapid bus only transit way (between Blacktown and Castle Hill) with dedicated lanes and stations along Sunnyholt Road on the east side.