Drive forward, as learner at end of parking line (6)
I believe the answer is:
propel
'drive forward' is the definition.
(I've seen this before)
'learner at end of parking line' is the wordplay.
'learner' becomes 'l'.
'at end of' is a charade indicator (letters next to each other).
'parking' becomes 'p'.
'line' becomes 'rope' (rope is a kind of line**).
'p'+'rope'='prope'
'l' after 'prope' is 'PROPEL'.
'as' is the link.
(Other definitions for propel that I've seen before include "Drive or push forward as with oars" , "Give impetus to" , "Launch" , "Push forwards" , "Cause to move forward with force" .)