Vehicle overturned on street trapping one bigot (6)
I believe the answer is:
racist
'bigot' is the definition.
(racist is a kind of bigot)
'vehicle overturned on street trapping one' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'overturned' shows that the letters should be reversed in order.
'on street' becomes 'st' (I've seen this in other clues).
'trapping' indicates putting letters inside.
'one' becomes 'i' (roman numeral).
'car' back-to-front is 'rac'.
'rac'+'st'='racst'
'racst' enclosing 'i' is 'RACIST'.
(Other definitions for racist that I've seen before include "One prejudiced against people of other nationalities" , "Hostile towards people of other ethnic origins" , "Scar it (anag)" , "Person prejudiced against others for ethnic reasons" , "proponent of B&W crime drama?" .)