This was mainly driven by a lower than usual contact rate in these areas (compared to mainstage), as well as higher refusal rates in the areas Torfaen, Gwynedd and Conwy.
Mae traffig fesul darn o'r ffordd yn llawer uwch ar draffyrdd o'i gymharu â chefnffyrdd, ffyrdd sirol ac is-ffyrdd (traffig ffyrdd).