The A40, A487, A4076, A477, A48, A483, A465, A470, A4060, A4232, A4042, A449 and A466 Trunk Roads & the A48(M), M4 and M48 Motorways (Various Locations in South and West Wales) (Temporary Prohibition of Vehicles) Order 2017
Mae Gweinidogion Cymru, sef yr awdurdod traffig ar gyfer y darnau perthnasol o Cefnffordd yr A40 Llundain i Abergwaun, Cefnffordd yr A40 Llandeilo i Gaerfyrddin, Cefnffordd yr A40 Rhaglan i Lanymddyfri, Cefnffyrdd yr A40 a’r A449 Casnewydd i Gaerwrangon, Cefnffordd yr A487 Abergwaun i Fangor, Cefnffordd yr A4076 Hwlffordd i Aberdaugleddau, Cefnffordd yr A477 Doc Penfro i Sanclêr, Cefnffyrdd yr A48, yr A4232 a’r A466 Llundain i Abergwaun, Cefnffordd yr A483 Abertawe i Fanceinion, Cefnffordd yr...