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. Where the number of lanes in one direction reduces between junctions on a dual carriageway, Signs W 091, W 092 or W 093 should be provided as appropriate. A pair of these signs shall be erected on the verge and central reserve, about 200m in advance of the start of the carriageway taper markings indicating the lane reduction and a second pair of signs shall be erected on the verges 20m before the start of the taper markings. On roads where the 85-percentile approach speed of private cars is 60 km/h or greater, a third pair should also be erected on the verge and central reserve about 400m in advance of the start of the taper markings. On roads where the 85-percentile approach speed of private cars is 80 km/h or greater, a fourth pair should also be erected on the verge and central reserve about 800m in advance.