English: The M4 Motorway (West of Junction 23A (Magor) to East of Junction 29 (Castleton)) (Variable Speed Limits) Regulations 2015

Welsh: Rheoliadau Traffordd yr M4 (Man i’r Gorllewin o Gyffordd 23A (Magwyr) i Fan i’r Dwyrain o Gyffordd 29 (Cas-bach)) (Terfynau Cyflymder Amrywiadwy) 2015