Pleasant crossing ring road that's not too steep (10)
I believe the answer is:
affordable
'not too steep' is the definition.
The definition suggests an adjective which matches the answer.
'pleasant crossing ring road' is the wordplay.
'pleasant' becomes 'affable' (I've seen this before).
'crossing' is an insertion indicator (to cross can mean to go over or around).
'ring' becomes 'O' (letter resembling a ring).
'road' becomes 'rd' (abbreviation for road).
'o'+'rd'='ord'
'affable' placed around 'ord' is 'AFFORDABLE'.
'that's' is the link.
Can you help me to learn more?
(Other definitions for affordable that I've seen before include "Reasonably priced" , "not breaking the bank" , "being within one's means" , "costing reasonable amount" , "sustainable" .)