ASTM D6628-16 PDF Download

ASTM D6628-16 is a standard specification that outlines the requirements for the color of retroreflective pavement marking materials used for traffic control lane markings and symbols on road surfaces. The specification covers both painted and tape lines, including various types such as thermoplastic and epoxy.

The standard specifies the daytime and nighttime color characteristics of the pavement marking materials. This includes criteria such as the chromaticity limits, retroreflectance, and daytime lightness limits. The specification is applicable throughout the service life of the material, ensuring consistent and reliable performance.

It is important to note that this specification does not apply to the testing of marking materials without added drop-on beads for quality control purposes. Additionally, the standard focuses on color requirements and does not describe other performance aspects like retroreflectance in detail.

The specification recognizes that angles used in retroreflection have historically been identified in degrees and allows the use of degrees with SI units. This flexibility aligns with international standards and practices in the field.