Patent ID: 8840956

Claim:
A method of applying a retroreflective surface to an inclined surface on a structure, said method comprising the steps of: applying a binder material to at least a portion of the inclined surface, wherein a thickness dimension of the applied binder material is at least 10 mil; and embedding a plurality of retroreflective granules at least partially within the thickness dimension of the binder material, the plurality of retroreflective granules being coated with a hydrophobic coating and having a density of at least 0.06 pounds/square foot as embedded in said binder material, each retroreflective granule comprising a glass member having a refractive index of at least 1.5 and a diameter greater than about 0.012 in., wherein said retroreflective granules are discharged from a nozzle onto the inclined surface, the nozzle moving in a forward direction with respect to the structure, and the direction of discharge being in a backward direction relative to the movement of the nozzle with respect to the structure.