Scope:

ASTM E1710-18 test method covers measurement of the Retroreflective properties of horizontal pavement marking materials containing retroreflecting beads, such as traffic stripes and surface symbols, using a portable retroreflectometer that can be placed on the road delineation to measure the retroreflection at a prescribed geometry.

Test Procedure:  

ASTM E1710-18 test method involves the use of commercial portable retroreflectometers for determining the coefficient of retroreflected luminance of horizontal coating materials used in pavement markings. The portable retroreflectometers use either a built-in reference white for standardization or use an external panel of known coefficient of retroreflected luminance, or both. The retroreflectometer is placed directly over the pavement marking to be measured, ensuring that the measurement area of the retroreflectometer fits within the width of the stripe, and the reading displayed by the retroreflectometer is recorded. The retroreflectometer is then moved to other positions on the pavement marking, and the readings are recorded and averaged. Ambient temperature shall be not less than 4°C (40°F).    

Specimen size:

Horizontal coating materials used in pavement markings are tested using ASTM E1710-18 method.

Conclusion:

ASTM E1710-18 provides detailed and thorough information about the Measurement of Retroreflective Pavement Marking Materials.