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. Special signs are prescribed for observance by drivers of light rapid transit (LRT) vehicles. These signs are deliberately different from other traffic signs, since they are intended only for LRT drivers. The LRT Speed Limit Sign, RUS 033, specifies the maximum speed for LRT vehicles in kilometres per hour. Other speeds may be displayed on the sign as required.