The effect of the Order is to temporarily prohibit and restrict traffic on lengths of the A465 trunk road between Rhigos and Glynneath to undertake works on or near the road.
Effaith y Gorchymyn yw gwahardd a chyfyngu ar draffig dros dro ar ddarnau o gefnffordd yr A465 rhwng y Rhigos a Glyn-nedd er mwyn gwneud gwaith ar y ffordd neu gerllaw iddi.