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. Use Shoulder: this plate should be used in conjunction with Signs WK 012 and WK 014 where it is necessary for the hard shoulder to be used as a traffic lane.