From Longman Dictionary of Contemporary Englishring roadˈring road noun [countable] British EnglishTTRROAD/PATH a road that goes around a large town to keep the traffic away from the centre → bypass
Examples from the Corpus
ring road• Nine tenths of the Leicester ring road is finished and has been for some years.• Back beside the ring road and the footbridge.• She fills up with petrol on the ring road.• It is so obvious that they should all stay outside the ring road except for the bus station where they would all terminate.• I stayed with him in the heavy traffic round the ring road, skirting the city centre and out towards Bingley.• All the good spots are close to the ring road.• Access at the bottom of Tubwell Row to the ring road might have to be controlled by traffic lights. 