The M4 Motorway (Junction 40 (Tai Bach) to Junction 42 (Earlswood), Neath Port Talbot) (50 mph Speed Limit) Regulations 2019 / Rheoliadau Traffordd yr M4 (Cyffordd 40 (Tai-bach) i Gyffordd 42 (Earlswood), Castell-nedd Port Talbot) (Terfyn Cyflymder 50 mya

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The M4 Motorway (Junction 40 (Tai Bach) to Junction 42 (Earlswood), Neath Port Talbot) (50 mph Speed Limit) Regulations 2019 / Rheoliadau Traffordd yr M4 (Cyffordd 40 (Tai-bach) i Gyffordd 42 (Earlswood), Castell-nedd Port Talbot) (Terfyn Cyflymder 50 mya

Source: Legislation .gov.uk