Metropolitan Ring Road is a planned beltway around Melbourne consisting of

• Monash Freeway (formerly South Eastern Arterial)
• southern link of CityLink
• West Gate Freeway
• Western Ring Road
• outer section of the Eastern Freeway to Ringwood
• planned connection between Eastern Freeway and Western Ring Road
• planned Scoresby Freeway

Its purpose is to:

• integrate the metropolitan area by linking middle and outer suburbs
• assist circumferential travel through the middle suburbs as opportunities for cross town movement are limited
• link the growing populations in the south-east and west suburbs to jobs and economic opportunities throughout the metropolitan area
• provide convenient access to Melbourne Airport, the ports of Melbourne and Geelong, and rail freight terminals, from all parts of Melbourne and from across the State
• provide good access to the whole of the Melbourne metropolitan area to and from country Victoria and interstate.

If completed it will provide a circumferential route around Melbourne starting from Altona and ending in Frankston. The resulting beltway will be similiar to the size and scope of Sydney's Orbital Motorway.

It becomes part of the Western Ring Road and is presently signed as the M80.

See List of Melbourne freeways