How do I meet contrast requirements with TopMark?
According to PROW-AG R304.1.3 Contrast, detectable warning surfaces shall contrast visually with adjacent gutter, street or highway, or walkway surfaces, either light-on-dark or dark-on-light. TopMark is available in the standard colors: Yellow, Black, Brick Red, Blue, and White. Color consideration is dependent on the color of the asphalt or concrete.
