English: The A55 Trunk Road (Entry and Exit Slip Roads at Junction 4, (Dalar Hir Interchange), Anglesey) (Temporary Prohibition of Vehicles) Order 2021

Welsh: Gorchymyn Cefnffordd yr A55 (Ffyrdd Ymuno ac Ymadael wrth Gyffordd 4 (Cyfnewidfa Dalar Hir), Ynys Môn) (Gwahardd Cerbydau Dros Dro) 2021