The effect of the Order is to restrict waiting in lay-bys on the A55 trunk road between Junction 2 (Trearddur Bay) and Junction 8 (Llanfair PG), Anglesey.
Bydd y Gorchymyn arfaethedig yn cyfyngu ar aros mewn cilfannau ar gefnffordd yr A55 rhwng Cyffordd 2 (Bae Trearddur) a Chyffordd 8 (Llanfair Pwllgwyngyll), Ynys Môn.