Unmetered parking went up (5)
I believe the answer is:
prose
'unmetered parking went up' is the definition.
I can't tell whether this definition defines the answer.
'parking went up' is the wordplay.
'parking' becomes 'p' (abbreviation on road signs).
'went up' becomes 'rose' (I've seen this in another clue).
'p'+'rose'='PROSE'
Can you help me to learn more?
(Other definitions for prose that I've seen before include "Literary genre" , "Non-verse" , "Ropes (anag.)" , "Not poetry" , "Normal written language" .)