Ring road travelling east arrives at river (3,6)
I believe the answer is:
rio grande
'river' is the definition.
(Rio Grande is an example)
'ring road travelling east' is the wordplay.
'travelling' is an anagram indicator.
'east' becomes 'e' ('E' can be a synonym of 'east').
'ring'+'road'='ringroad'
'ringroad' with letters rearranged gives 'riogrand'.
'riogrand'+'e'='RIO GRANDE'
'arrives at' is the link.
(Other definitions for rio grande that I've seen before include "River flowing between USA and Mexico" , "US/Mexican border river" , "Mexico-USA border" , "banker" , "Long river" .)