High Intensity and Diamond Grade Signs Meet DOT and MUTCD State and Federal Guidelines
MUTCD Information: If the condition indicated by a warning sign is located on an intersecting road and the distance between the intersection and condition is not sufficient to provide adequate advance placement of the warning sign, a Supplemental Arrow (W16-5p, W16-6p, W16-7pL Diagonal Downward Arrow Left) plaque should be used below the warning sign.