The M5 Motorway is a 28.8-kilometre (17.9 mi) series of tolled motorways located in Sydney, New South Wales designated as route M5. It is part of the Sydney Orbital Network.

The M8 Motorway is a 15.2-kilometre (9.4 mi) tolled dual carriageway motorway in Sydney that is designated the M8 route marker. It consists predominantly of tunnels and includes tunnel connections to the future Western Harbour Tunnel and the M6 Motorway.