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. The No Right Turn Sign, RUS 012, and No Left Turn Sign, RUS 013, are used to indicate a prohibited right or left turn. The signs shall be located on the left-hand side of the road approaching the prohibited turn. Where the sign is likely to be obscured or is located on a one-way road, it should be duplicated on the right-hand side. It should also be duplicated on the central reserve of a dual carriageway. In cases where a turning prohibition indicated by Signs RUS 012 or RUS 013 applies only to certain vehicle types, or during specific periods of the day, a Supplementary Plate P 050, Exceptions, or P 051, Period of Operation, shall be used to define the conditions that apply.