Curious.

That sign appears to be intended as advance waring of a cycle ban, rather a prohibition itself. But there are no signs actually banning cyclists at the junction itself, or at the roundabout exit.

The same appears to be the case at the other end, with advanced signs on the approaches to the roundabout  at LLanfairfechan, but no indication of an actual ban at the roundabout exit.

Do you know if there is a traffic regulation order in place actually prohibiting pedal cycles from using that stretch of road, or are the signs over enthusiastic promotion of the national cycle network by Sustrans?
