CE Certified Road sign manufactured in Knocktopher, Kilkenny. CE certification is a required standard for Road Signs in the EU since 2013. National Roads- Unlit Area: RA1 if AADT<3500, RA2 if AADT is >3500. Lit Area: RA2. Regional Roads- Unlit Area:RA1. Lit Area: RA2. Local Roads- Unlit and Lit Area: RA1. Roadworks- Unlit and Lit Area: RA2. When an advance sign for a vehicle weight restriction for traffic management (Sign W 114) or safety reasons (Sign W 115) is provided, it may be necessary to erect signs indicating an alternative route for heavy vehicles. Heavy Vehicle Advance Direction signs, Signs F 510, F511L and F 511R, and Heavy Vehicle Direction signs, Signs F 512L and F 512R, may be used to direct these vehicles. They are used in the same manner as High Vehicle signs described above.