All signs are manufactured in accordance with Chapter 8 of the Traffic Signs Manual Ireland, which outlines the standards in temporary traffic management in Ireland. All Chapter 8 roadworks signs are to be RA2 face material. The chapter specifies the requirements for the use of temporary traffic control measures, such as signs, barriers and cones, in roadworks and other temporary traffic management situations. Roadworks Ahead: this sign shall be the first temporary sign visible to the road user on the approach to any roadworks. It may be supplemented with a Supplementary Plate P 082 indicating the nature of the works. At some sites, it is necessary to provide additional Signs WK 001 well in advance of the start of the roadworks. Where this is the case, the signs shall require a Supplementary Plate P 001 indicating the distance to the start of the works. End of Roadworks: The Roadworks Ahead sign shall be erected together with a Supplementary Plate P 010 End, as the last temporary sign visible to the road user leaving any roadworks. This End plate marks the finish of all other roadworks warning signs used within the site. This sign is also available in RA1 material which is not to Chapter 8 specification.