Truss is transport minister but for some reason is not referred to as such in his title: Deputy PM, Leader of NATS, Minister Infrastructure-Regional development. From Wiki below,
Transport[edit]
List of Transport Ministers[edit]
MinisterPartyTenureMinisterial Title
Thomas PatersonNationalist1928–1929Minister for Markets and Transport
Parker MoloneyLabor1929–1932
Archdale ParkhillUnited Australia Party1932Minister for Transport
Larry AnthonyCountry1941
George LawsonLabor1941–1943
Eddie Ward1943–1949
Howard BealeLiberal1949–1950
George McLeay1950–1951Minister for Shipping, Fuel and Transport1951–1955Minister for Shipping and Transport
John Spicer1955
Shane Paltridge1955–1960
Hubert Opperman1960–1963
Gordon Freeth1963–1968
Ian SinclairCountry1968–1971
Peter Nixon1971–1972
Gough WhitlamLabor1972
Charles Jones1972–1975Minister for TransportPeter Nixon
National Country1975–1979
Ralph Hunt1979–19821982–1983Minister for Transport and Construction
Peter MorrisLabor1983–1987Minister for Transport
Gareth Evans1987–1988Minister for Transport and Communications
Ralph Willis1988–1990
Kim Beazley1990–1991
John Kerin1991–1991
Graham Richardson1991–1992
Bob Collins1992–1993
Laurie Brereton1993–1996Minister for Transport
John SharpNational1996–1997Minister for Transport and Regional Development
Mark Vaile1997–1998
John Anderson1998–2005Minister for Transport and Regional Services
Warren Truss2005–2006Mark Vaile2006–2007
Anthony AlbaneseLabor2007–2010Minister for Infrastructure, Transport, Regional
Development and Local Government2010–2013Minister for Infrastructure and Transport
Warren TrussNational2013–presentMinister for Infrastructure and Regional Development.
I too noticed his title used yesterday in relation to East West Melbourne bypass with interjections by Albo, (ex Minister transport), and a transport matter but not used in his questions as it has been done in the past. Is someone using an obvious, perhaps intentional, Freudian slip to tell us something?