Clear parking in front of drive (5)
I believe the answer is:
purge
'clear' is the definition.
(purging is a kind of clearing)
'parking in front of drive' is the wordplay.
'parking' becomes 'p'.
'in front of' says to put letters next to each other.
'drive' becomes 'urge' (I've seen this before).
'p'+'urge'='PURGE'
(Other definitions for purge that I've seen before include "Exterminate" , "elimination of opponents" , "empty bowels" , "Rid organisation of undesirable members" , "Cleanse or eradicate." .)