The $8.3 billion Sydney Metro Northwest was Australia’s biggest public transport project and is being followed up with the Sydney Metro City and Southwest project. Sydney Metro Northwest is Australia’s first fully-automated metro network, delivering 8 new railway stations, 4,000 new commuter car parking spaces and 5 existing railway stations upgraded to metro status.The NSW Government awarded the $3.7 billion Operations, Trains and Systems contract to Northwest Rapid Transit (NRT). This Public Private Partnership (PPP) is the largest ever awarded in NSW and saw the NRT consortium deliver the Sydney Metro Northwest in 2019 and will operate and maintain it for the next 15 years.22 Next generation metros operate 2228 services per week on Sydney Metro Northwest with a metro every 4 mins in peak hours and 98 percent on-time running.Sydney Metro Northwest was the first stage of the new metro network and will transform and modernise public transport in Sydney forever. The project features: Construction of 23km of new electrified, twin track, metro railway between Tallawong Road, Rouse Hill and Epping. Upgraded the existing 13km Epping to Chatswood railway to metro standards, including the existing stations at Epping (lower level), Macquarie University, Macquarie Park, North Ryde and Chatswood (metro platforms). Australia’s longest rail tunnels – 15km long and up to 58m below ground at their deepest point.  Between Bella Vista and Rouse Hill, a 4km elevated skytrain was built, followed by 4km of bridges, embankments and surface tracks to the terminus. A Sydney Metro Train Facility to allow metro's to be cleaned, maintained and parked at night and off peak was built at Tallawong Road, Rouse Hill.