Road up? (7)
I believe the answer is:
highway
'road' is the definition.
(highway is a kind of road)
'up?' is the wordplay.
I cannot quite understand how this works, but
'up?' could be 'high' (associated in meaning) and 'high' is located in the answer.
The remaining letters 'way' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for highway that I've seen before include "Major road for motor transport" , "Open road" , "Road-user's Code" , "Such robberies" , "Major route" .)