The effect of the Order is to temporarily prohibit vehicles on lengths of the A470 and A479 trunk roads at Llyswen, Powys to undertake works on or near the roads.
Effaith y Gorchymyn yw gwahardd cerbydau dros dro ar ddarnau o gefnffyrdd yr A470 a’r A479 yn Llys-wen, Powys er mwyn gwneud gwaith ar y ffyrdd neu gerllaw iddynt.