T63) and 735 (renumbered 616, now 616X) were transferred from Busways to Hillsbus with route 718 transferred from Hillsbus to Busways. On 30 June 2014, the Opal card was rolled out on all of Hillsbus' NightRide and Region 4 routes (including school services). On 28 July 2019, after the Sydney Metro Northwest opened in May, bus routes in the Hills District were reorganised, with some services rerouted to stop at various Sydney Metro stations. In November 2022, CDC was awarded the contract to retain Region 4. The Hillsbus brand will be replaced by the CDC NSW brand when the contract commences in April 2023. Routes Since 2005, Hillsbus' services have formed Sydney Bus Region 4. In August 2013, Hillsbus successfully tendered to operate the Region 4 services for another five years from August 2014. Hillsbus operates the following services: 535 from Parramatta to Carlingford (rail replacement bus service) Bus routes 600 to 665 in Sydney's north-western suburbs, including 600 (formerly Metrobus M60) from Hornsby to Parramatta 610X (formerly Metrobus M61) from Castle Hill to Queen Victoria Building. 66x series along the North West T-Way (formerly T6x series) Express services along the M2 Hills Motorway and Lane Cove Tunnel to Macquarie Park, North Sydney and Queen Victoria Building Bus routes 700 to 715 in Sydney's western suburbs (Wentworthville, Seven Hills, Blacktown) Other railway replacement bus services Hillsbus also operated other railway replacement bus services between 2018 and 2019. Hillbus operated Station Link services (SLx series) between September 2018 and May 2019, while the Epping to Chatswood rail link was closed for upgrading and conversion to Sydney Metro Northwest. It stopped at Epping, Chatswood, Macquarie Park, Eastwood, Macquarie University, Beecroft and St Leonards stations. It was jointly operated with Transdev NSW. The service ceased when the Metro opened in May 2019. Thereafter, until November 2019, Hillsbus operated the North West Night Bus to supplement the Metro North West Line on Sunday to Wednesday nights. Like Station Link, it was jointly operated with Transdev NSW. Fleet Depots As of July 2022, Hillsbus operates 601 buses across four depots: Foundry Road (F) in Seven Hills - Head Office of Hillsbus - 204 buses Dural (D) - 177 buses Northmead (N) - 188 buses Seven Hills (V) - another depot also in Seven Hills, smaller than Foundry Road depot - 32 buses Hillsbus also operated 62 buses at the Camellia depot designated for Station Link