The A458 Trunk Road (East of Middletown to Nant-y-Dugoed, Powys) (Temporary Speed Restrictions & No Overtaking) Order 2019 / Gorchymyn Cefnffordd yr A458 (Man i’r Dwyrain o Dreberfedd i Nant-y-dugoed, Powys) (Cyfyngiadau Cyflymder Dros Dro a Dim Goddiweddyd) 2019