The effect of the Order is to introduce a 40mph speed limit on the length of the A470 trunk road known as Llanwrst Road at Llansanffraid Glan Conwy.
Mae angen y Gorchymyn er budd diogelwch ar y briffordd o ganlyniad i osod croesfan newydd â signalau ar gefnffordd yr A40 wrth ffordd a elwir Cartlett, Hwlffordd.