Standard Test Method for Retroreflectance of Horizontal Coatings

Importancia y uso:

5.1 The quantity coefficient of retroreflected luminance is a measure of the reflected luminance in the direction of the observer. This is the light returned by the retroreflective surface to the observer from the source, which in practice is the vehicle headlamp.

5.2 This test method may be used as a measure of the nighttime performance of horizontally applied surfacing materials used on highway surfaces for lane markings and other traffic control purposes.

5.3 Since this test method is a laboratory procedure, test specimens must be prepared so that they can be mounted on the specimen holder. Specimens measured by this laboratory method may be used as transfer standards for the calibration of portable instrumentation.

5.4 Specimen selection and preparation may significantly influence the results of this test method.

Subcomité:

E12.10

Referida por:

D6628-23, E0179-17R22, D4592-12R22, E1710-18, D4505-12R22, D7585_D7585M-10R22

Volúmen:

06.01

Número ICS:

87.040 (Paints and varnishes)

Palabras clave:

coefficient of retroreflected luminance; horizontal coatings; pavement markings; retroreflection;