Roper Road, Colyton

M4 Smart Motorway project – Stage 1

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.

Project information

  • Widening the M4 Motorway from three to four lanes in each direction between Roper Road and the M7 Motorway
  • Building new maintenance bays along the M4 Motorway between Mamre Road and Reservoir Road
  • Installing new emergency phones which will be connected to the incident management system
  • Building three new noise walls and extending one existing noise wall
  • Upgrading three interchanges at Reservoir Road, Wallgrove Road and Roper Road, including the installation of ramp meters and ramp control signs, as well as widening and realigning entry ramps
  • Upgrading communications and power infrastructure to improve reliability of the corridor and support the rollout of additional electronic messaging, video surveillance cameras, vehicle detection devices and ramp metering
  • Installing vehicle detection loops and CCTV cameras at each interchange to better manage traffic flow onto and along the motorway.
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