ASTM RR:E12-1007 PDF Download

ASTM RR:E12-1007 standard, also known as E2832-Standard Test Method for Measuring the Coefficient of Retroreflected Luminance of Pavement Markings in a Standard Condition of Continuous Wetting (RL-2), aims to establish a precision statement for measuring the coefficient of retroreflected luminance of pavement markings. The standard conducts an interlaboratory study, specifically Interlaboratory Study # 710, to assess the precision of the test method.

During the study, ten analysts from various companies participated. They tested ten different locations on a specially prepared section of pavement. Each analyst provided an individual determination, and duplicate test results were requested for each area tested. The purpose of this approach is to ensure consistent and accurate measurements of retroreflected luminance under continuous wetting conditions.

The standard, RR:E12-1007, serves as a guide for conducting the test method and determining the coefficient of retroreflected luminance of pavement markings. It provides a framework for evaluating the performance and visibility of markings under wet conditions, thus facilitating the development of improved road safety measures.