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.
- 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.