Sydney CBD motorways optimisation

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Inner Sydney road network capacity
Priority Initiative
Infrastructure Category
Near term (0-5 years)
Sydney Inner City, NSW
52_Sydney CBD motorways optimisation


Motorways in the Sydney CBD are an integral part of the road network, providing through movements and access between the CBD and other major centres. Traffic joining the motorways is unmanaged, and the roads are not performing effectively to cope with growing demand.

The roadways are currently congested during peak times, which has significant knock-on impacts on the broader road network. Further, the large number of events and incidents exacerbates congestion and unreliable traveltimes. This also results in more crashes, particularly during congested periods.

Without intervention, demand growth will lead to even higher levels of congestion, unreliability and frequency of crashes.

Proposed initiative

The initiative focuses on better use of existing assets to improve performance and capacity of the road network.

Potential responses includes the provision of Intelligent Transport Systems and other technology to regulate traffic flows onto and off the motorways, and to increase real-time information for motorists. The objectives would be to:

  • reduce travel times, vehicle operating costs and environmental impacts
  • improve travel-time reliability, user experience and road safety.

Next steps

Proponent to identify initiatives and develop options (Stage 2 of Infrastructure Australia’s Assessment Framework).