The effect of the order is to temporarily restrict and prohibit traffic on lengths of the A40 trunk road between Llandeilo and Carmarthen, Carmarthenshire 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 rhwng Llandeilo a Chaerfyrddin, Sir Gaerfyrddin er mwyn gwneud gwaith ar y ffordd neu gerllaw iddi.