The M4 motorway (junction 34 (Miskin), Rhondda Cynon Taf to junction 36 (Sarn), Bridgend) (temporary 40mph and 50mph speed limits) Order 2021
Gorchymyn traffordd yr M4 (cyffordd 37 (y Pîl) i gyffordd 38 (Margam)) (gwaharddiadau a chyfyngiadau traffig dros dro) 2021