The A5 Trunk Road (Llangollen, Denbighshire to Pentrefoelas, Conwy County Borough) (Temporary 40 MPH Speed Restriction and No Overtaking) Order 2017 / Gorchymyn Cefnffordd yr A5 (Llangollen, Sir Ddinbych i Bentrefoelas, Bwrdeistref Sirol Conwy) (Cyfyngiad Cyflymder 40 mya Dros Dro a Dim Goddiweddyd) 2017