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The report summarises the results of detailed transport network modelling undertaken by Veitch Lister Consulting on behalf of Infrastructure Australia for the 2019 Australian Infrastructure Audit. The modelling was undertaken for the nation’s six largest urban conurbations, defined as an extended urban area. 

This assessment brief outlines the New South Wales Government's WestConnex project, which consists of around 33 km of interconnected road projects that will extend the M4 motorway towards Sydney city, widen the M5 East motorway and join those two motorways with a new tunnel running under the inner western suburbs of Sydney.

This assessment brief outlines the New South Wales Government's proposal to complete the remaining 40 per cent of works to upgrade the Pacific Highway to a minimum four-lane divided highway between Sydney and Brisbane.

This assessment brief outlines the Western Australian Government's proposal to widen a section of the North West Coastal Highway in the Pilbara region of Western Australia. The project will improve the efficiency and safety of freight and other vehicles on the highway by widening the sealed section and creating improved flood immunity to support the operation of wide and heavy vehicles. The Western Australian Government is seeking $143.2 million in Commonwealth funding for the project.

This assessment brief outlines the Queensland Government's plan to modify existing road space for bus lanes to connect high-growth suburbs to the metropolitan public transport network and CBD. The new bus lanes will improve access to jobs, education and services.

This assessment brief outlines the South Australian Government's plan for a package of bus priority measures, transit zones and interchange upgrades on the East–West Bus Corridor in Adelaide. The project will improve the efficiency and service quality of existing bus services on the east–west (including the north-east) mass transit corridor and thereby increase public transport patronage. The South Australian Government is seeking $174.3 million in Commonwealth funding for the project.

This assessment brief outlines the Queensland Government's plan for the core Cross River Rail project. The project will provide the necessary infrastructure to support the transformation of Brisbane into Australia's third internationally competitive city and support critical freight networks. An updated capital cost of $4,445 million was announced publicly by the Queensland Government in late June 2012. The Queensland Government is seeking $3.33 billion of Commonwealth funding for the project.

This assessment brief outlines the Western Australian Government's proposal to build approximately 1.8 kilometres of dual carriageway and undertake a major intersection reconfiguration along the Leach Highway (High Street) in East Fremantle between Carrington Street and the Stirling Highway. The upgrade will reduce delays for freight vehicles, improve road capacity and improve network amenity along a section of urban arterial road. The Western Australian Government is seeking $57.2 million in Commonwealth funding for the project.

This assessment brief outlines the Queensland Government's plan to upgrade the Ipswich Motorway between Rocklea and Darra. The upgrade will improve travel times and reliability for freight travelling on the Ipswich Motorway between Rocklea and Darra. The Rocklea to Darra section of the Ipswich Motorway is the final stage of the six-stage upgrade of the Ipswich Motorway. This is the first time Infrastructure Australia has received a submission for the sixth stage, Rocklea to Darra. The Queensland Government is seeking $558 million in Commonwealth funding for the project.

This assessment brief outlines the Western Australian Government's proposal to upgrade sections of the Great Northern Highway between Muchea and Wubin in the Wheatbelt region. The project will involve reconstruction and realignment of selected sections of the highway, upgrading intersections, widening the seal and constructing additional passing lanes. The upgrade will mprove the efficiency, reliability and safety of the route between Perth and the north-west of Western Australia. The Western Australian Government is seeking $288.9 million in Commonwealth funding for the project.