The effect of the Order is to temporarily prohibit vehicles on lengths of the A4042 trunk road between Caerleon and Cwmbran roundabouts to undertake works on or near the road.
Effaith y Gorchymyn yw gwahardd cerbydau dros dro ar ddarnau o gefnffordd yr A4042 rhwng cylchfannau Caerllion a Chwmbrân er mwyn gwneud gwaith ar y ffordd neu gerllaw iddi.