The effect of the order is to temporarily prohibit and restrict traffic on a length of the A470 trunk road at Taffs Well, Rhondda Cynon Taf to undertake works on or near the road.
Effaith y Gorchymyn yw gwahardd a chyfyngu ar draffig dros dro ar ddarnau o gefnffordd yr A40 yn Nhrefynwy, Sir Fynwy er mwyn gwneud gwaith ar y ffordd neu gerllaw iddi.