The effect of the Order is to restrict the speed of vehicles on lengths of the M4 motorway from junction 34 to junction 36 to undertake works on or near the road.
Effaith y Gorchymyn yw cyfyngu ar gyflymder cerbydau dros dro ar ddarnau o draffordd yr M4 o gyffordd 34 i gyffordd 36 er mwyn gwneud gwaith ar y ffordd neu gerllaw iddi.