Black-and-white driver
I believe the answer is:
cop
'black-and-white driver' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cop that I've seen before include "Member of the police force and an arrest" , "Police officer (informal)" , "Short policeman" , "Police officer (slang)" , "Policeman (colloq.)" .)