http://www.legislation.gov.uk/wsi/2011/246/madeThe M4 Motorway (Junction 45 (Ynysforgan) and Junction 48 (Hendy)) (Temporary Prohibition of Vehicles & Trafficking of Hard Shoulder) Order 2011Gorchymyn Traffordd yr M4 (Cyffordd 45 (Ynysforgan) a Chyffordd 48 (Yr Hendy)) (Gwahardd Cerbydau Dros Dro a Chaniatáu Traffig ar y Llain Galed) 2011King's Printer of Acts of Parliament2011-02-16