Bypass or roundabout? (4,4)
I believe the answer is:
ring road
I believe this is a double definition.
'bypass' is the first definition.
(I know that bypass can be written as ring road)
'roundabout?' is the second definition.
(I've seen this before)
'or' is the link.
(Other definitions for ring road that I've seen before include "Bypass round urban area" , "Orbital route" , "roundabout?" , "Bypassing thoroughfare" , "Way round a town" .)