As a part of the privatisation process, franchise contracts between the state government and both private operators included obligations to extend and modernise the Melbourne tram network. This included acquiring new tram rolling stock, in addition the existing tram fleet was refurbished. Swanston Trams (M>Tram) introduced 59 new Siemens Combino (D-class) low-floor built trams by Siemens, at a cost of A$175 million, and invested approximately A$8 million in refurbishing their fleet, while Yarra Trams introduced 36 Alstom Citadis (C-class) low-floor trams, at a cost of A$100 million, and invested A$5.3 million refurbishing their fleet.