The effect of the Order is to temporarily prohibit vehicles on a length of the M4 motorway between Junction 23 (Rogiet) and the Wales/England border to undertake works on or near the road.
Effaith y Gorchymyn yw gwahardd cerbydau dros dro ar ddarn o draffordd yr M4 rhwng Cyffordd 23 (Rogiet) a Ffin Cymru/Lloegr er mwyn gwneud gwaith ar y ffordd neu gerllaw iddi.