Welcoming 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.
'welcoming crossing ring road' is the wordplay.
'welcoming' becomes 'affable' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'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' going around 'ord' is 'AFFORDABLE'.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for affordable that I've seen before include "costing reasonable amount" , "Reasonably priced" , "not breaking the bank" , "being within one's means" , "Within one's ability to pay" .)