Ignore ring road? (6)
I believe the answer is:
bypass
This clue is a double definition.
'ignore' is the first definition.
(I've seen this before)
'ring road?' is the second definition.
(I know that ring road can be written as bypass)
(Other definitions for bypass that I've seen before include "Sort of surgery" , "operation to improve circulation" , "Ring road" , "not found in the high street" , "ring-road, maybe" .)