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Glass beads perform an important function of traffic safety because of their retro reflective properties. This property allows the motorist to clearly see the pavement line markings more clearly at night and in wet conditions. When a car's headlight beam shines on a pavement marking that is integrated / embedded / saturated with glass beads, the line stripes light up and become much easier to see at night. This effect is called retro reflection. Paints that have glass beads in them have enhanced night-time reflectivity, higher visibility and safety for the driver.
Glass beads are sold by the 50 pound bags or pallet quantity. The average application will require 5-7 pounds glass beads per gallon of USSC traffic marking paint. Glass Beads can be dropped onto many different kinds of non reflective paints to make them reflective.