PERFORMED PATTERNED PAVEMENT MARKING FILM. A. General • The markings shall be manufactured and packaged to permit storage at the manufacturer’s recommended shelf life for a period of not less than one year from the date of purchase. • Legends and symbols shall meet the applicable shapes and sizes. B. Composition • Provide retroflective pliant polymer pavement markings that consist of a mixture of polymetric materials, pigments and glass beads distributed throughout its base cross-sectional area, with a reflective layer of ceramic beads bonded to a polyurethane topcoat surface. • Provide material with a patterned surface with between 35 and 65 percent of the surface area raised and presenting a near vertical face to traffic approaching from all directions. • Ensure the channels between the raised areas are substantially free of exposed beads or particles. • Provide material that has minimal exposed beads and particles between the raised areas. • Provide preformed markings that conform to pavement contours by the action of traffic. • Provide pavement markings applied using a pressure sensitive adhesive in accordance with the manufacturer’s instructions. Provide markings that are immediately ready for traffic after application. C. Skid Resistance • Provide tape that has a surface that provides an initial minimum skid resistance value of 45 BPN when tested according to ASTM E 303. Obtain the values at downweb and at 45-degree angle from downweb. Average the two values to find the skid resistance of the patterned surface...
