Road sweeping price (12)
I believe the answer is:
thoroughfare
'road' is the definition.
(thoroughfare is a kind of road)
'sweeping price' is the wordplay.
'sweeping' becomes 'thorough' (synonyms).
'price' becomes 'fare' (I have seen 'Price of passage ' mean 'fare' so perhaps 'price' could also mean 'fare').
'thorough'+'fare'='THOROUGHFARE'
(Other definitions for thoroughfare that I've seen before include "Public way or street" , "Road or path" , "highway" , "Public road" , "Access - road" .)