http://www.legislation.gov.uk/wsi/2014/2000/madeThe A470 Trunk Road (Coryton Interchange, Cardiff) (Temporary Prohibition of Left and Right Hand Turns and 40 MPH Speed Limit) Order 2014Gorchymyn Cefnffordd yr A470 (Cyfnewidfa Coryton, Caerdydd) (Gwahardd Dros Dro Droi i’r Chwith a Throi i’r Dde a Therfyn Cyflymder 40 MYA Dros Dro) 2014King's Printer of Acts of Parliament2014-07-31