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. Sign W 103, Start of Climbing Lane, should be provided at the start of a climbing lane on a single carriageway road. On a Type 3 Dual Carriageway Sign W 100, Start of Passing Lane, should be used. No warning sign is needed for the start of a climbing lane on a Type 1 or Type 2 Dual Carriageway.