The A487 Trunk Road (Aberystwyth, Ceredigion to the Powys/Gwynedd County Boundary at Dyfi Bridge, Powys) (Temporary Speed Restrictions and No Overtaking) Order 2019 / Gorchymyn Cefnffordd yr A487 (Aberystwyth, Ceredigion i Ffin Sirol Powys/Gwynedd wrth Bontarddyfi, Powys) (Cyfyngiadau Cyflymder Dros Dro a Dim Goddiweddyd) 2019