The purpose of the PASSING LANE Sign is to inform motorists of an opportunity to pass slower-moving vehicles. This sign should be preceded with the PASSING LANE 2KM AHEAD Sign (Rb-30). MTO Book Location: New, Not in Book Reflective Engineering GradeHi-IntensityDiamond Grade Substrate AluminumGalvanized Steel Size 90cm x 90cm (36" x 36") Quantity Add to Quote