The effect of the order is to temporarily prohibit and restrict traffic on lengths of the A470 trunk road between Coryton and Abercynon to undertake works on or near the road.
Y terfyn cyflymder ar system gylchu Coryton ac ar y brif A470 yw 40 mya ar hyn o bryd ac mae angen i’r terfyn cyflymder ar y darn hwn o’r gefnffordd fod yn gyson â’r ffyrdd sy’n cyffinio â hi.