Parking, goes back and goes in front (8)
I believe the answer is:
precedes
'back and goes in front' is the definition.
I can't judge whether this defines the answer.
'parking goes' is the wordplay.
'parking' becomes 'p' (abbreviation on road signs).
'goes' becomes 'recedes' (receding is a kind of going).
'p'+'recedes'='PRECEDES'
Can you help me to learn more?
(Other definitions for precedes that I've seen before include "Comes before" , "Heralds" , "has priority" , "Goes in front (of)" , "Goes before in time or order" .)