M4 Smart Motorway project

The M4 Smart Motorway project will introduce intelligent technology, known as a motorway management system, to Sydney’s M4 Motorway between Pitt Street, Mays Hill and Russell Street, Lapstone.

Updates and announcements

Community update

An update on the works completed to date and the upcoming works are available in the M4 Smart Motorway – Stage 1 Community Update (PDF, 336Kb).

Speed reduction on the M4 Motorway

The speed limit on the M4 Motorway between Mamre Road and Reservoir Road will be reduced during construction. Please refer below for change dates

  • Between M7 Interchange - Archbold Road Westbound from Saturday 2 December will be reduced to 80 km/h, 24 hours 7 days a week
  • Between Roper Road - M7 Interchange Eastbound from Thursday 18 January will be reduced to 80 km/h, 24 hours 7 days a week.

Cycle detour

For safety reasons, there will no cyclist access on the M4 Motorway between Mamre Road and Reservoir Road from Friday 1 December until project completion in 2020. Please see our cycle detour map (PDF, 164Kb).

Project background

The NSW Government has committed $470 million to building the M4 Smart Motorway project.

Smart motorways, also known as managed motorways, use complementary technologies to monitor traffic conditions, manage congestion and respond to incidents in real time.

The M4 Smart Motorway will introduce a smarter way of travelling the M4 by using real time information, communication and traffic management tools to provide motorists with a safer, smoother and more reliable journey.

The M4 Smart Motorway will be the first smart motorway for NSW and will bring together intelligent traffic technologies in one place to maximise the performance of the motorway.

The project would connect with the WestConnex project at Mays Hill.

More information

What's happening now?

The M4 Smart Motorway project  will be completed in five stages, which will help limit disruption along the motorway, and ensure we keep people moving.

The first stage of construction is commencing, and will be fully operational within three years, subject to weather.

We will be notifying the local community around each stage of construction before work begins.

For more information about each stage of work and the upgrades in your area, follow the link to our interactive portal.

3D animation

Watch a short 3D animation on the M4 Smart Motorway project and the benefits and features of a smart motorway.

Did you know?

Western Sydney is Australia’s third largest economy and in its own right would be Australia’s fourth largest city. During the next 20 years the region is expected to grow from two million to three million people, which is why the NSW Government is investing money into significant road infrastructure.

For more information about our projects in your area please visit www.rms.nsw.gov.au/projects.

Subscribe to updates

To receive email updates on the project, please register your contact details with us by completing this form.

You will be sent a confirmation email advising that you have been added to the project subscription list.

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