M4 Smart Motorway Project – Stage 3

The NSW Government is investing $600 million to build the M4 Smart Motorway project, which will introduce intelligent technology to the M4 Motorway between Pitt Street, Mays Hill and Mulgoa Road, Penrith.

Key features of Stage 3

  • Installation of maintenance bays, vehicle detection loops, emergency phones and upgrades to power and communications infrastructure
  • Realignment, extension and widening of ramps at Mamre Road interchange
  • Installation of ramp meters and ramp control signs at The Northern Road, Kent Street and Mamre Road.
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