Abrasion resistant reflective marking composition

An abrasive resistant, reflective exterior marking composition useful for application to a substrate, such as a cementitious substrate, said composition comprising, in combination, a vehicle component including an organic thermoplastic, resinous, film-forming material in an amount sufficient to form a tenacious bond with said substrate, a high visibility, fluorescent pigment in an amount sufficient to produce fluorescence, a sufficient quantity of an extender for said vehicle so as to render said composition readily applicable to said substrate by brushing or spraying or troweling, and the remainder being an inorganic aggregate material including a sand component, hydraulic cement in a cementitious amount and a glass fiber strand component, wherein said hydraulic cement is Portland cement in the amount of about 0.1-500 parts by weight, said sand component is sand in the amount of about 0.1-1500 parts by weight, said fluorescent pigment is in at least about 0.10 parts by weight, said film-forming material is in the amount of about 0.01-300.0 parts by weight, said glass fiber strand component is in the amount of about 0.1-50.0 parts by weight, and said extender includes a water-reducing agent in the amount of about 0.03-10.0 parts by weight and water in the amount of about 0.04-200.0 parts by weight.