Trucker's space (3)
I believe the answer is:
cab
'trucker's space' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cab that I've seen before include "An American taxi" , "Hired car" , "vehicle" , "'The authority collects money made from crime, initially (3)'" , "It has the authority to confiscate the proceeds of crime, in short" .)