WestConnex M4 Widening traffic volume data

In July 2017 the NSW Government completed the widening of the existing M4 Motorway from Parramatta to Homebush to increase capacity on this section from three to four lanes in each direction. The 7.5km M4 Widening forms part of the $16.8 billion WestConnex project.

The M4 Widening was officially opened to traffic in July 2017, with a toll free period. Average daily traffic volumes reached their highest point during the toll free period, before moderating following the introduction of the new toll on 15 August 2017. On 27 September 2018, Sydney Transport Partners, a consortium led by Transurban, acquired a 51 per cent stake in WestConnex from the New South Wales Government.

Map showing the location of the widened M4, between Parramatta and Homebush

M4 Widening traffic volume data

Important information

  • This webpage provides M4 Widening average daily traffic volumes (light and heavy vehicles) from 1 July 2017 to 31 October 2018 for information purposes only.
  • Traffic data from 31 October 2018 for the M4 Widening can be found on Transurban’s website You can find this data in Transurban’s quarter updates, half-year results or full year results depending on the time frame of the data you are seeking.  
  • Transurban also publishes traffic data quarterly in accordance with its obligations under an Undertaking accepted by the ACCC on 29 August 2018 under Section 87B of the Competition and Consumer Act 2010 (Cth). View that data on NSW toll road data. If you have any questions about the website or the data published there please get in touch with RSM Australia Pty Limited, the ACCC approved Independent Auditor. Roads and Maritime Services is not the provider of this data or website.

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