Fox exposes rise of public transport vehicle (8)
I believe the answer is:
outsmart
'fox' is the definition.
(I've seen this before)
'exposes rise of public transport vehicle' is the wordplay.
'exposes' becomes 'outs' (outing is a kind of exposing).
'rise of' says the letters should be written backwards.
'public transport vehicle' becomes 'tram' (I've seen this before).
'tram' backwards is 'mart'.
'outs'+'mart'='OUTSMART'
(Other definitions for outsmart that I've seen before include "Defeat by skillful maneuvering" , "Win by clever thinking" , "Defeat by more skilful manoeuvring" , "Cunningly get the better of" , "Outwit" .)