What is cycle proofing?

I don't entirely disagree with this comment, but unfortunately since the RTTC (as it then was) banned 'u' turns for safety reasons, there has been an increasing tendency to ride on dual carriageways because there is no where else practical to go.

I don't find DCs to be too bad. At least you generally have a good view of the road. Road racing around twisting, single-lane roads on the other hand requires rolling road closures to be safe.