The M4 motorway (junction 28 (Tredegar Park) to junction 24 (Coldra)) (50mph speed limit) regulations 2021: plan, file type: PDF, file size: 10 MB
Rheoliadau traffordd yr M4 (cyffordd 28 (Parc Tredegar) i gyffordd 24 (Coldra)) (terfyn cyflymder 50mya) 2021: cynllun, math o ffeil: PDF, maint ffeil: 10 MB