Standards / Research Reports
Research Report RR:E12-1004An interlaboratory study was conducted by ten laboratories testing ten samples to establish a precision statement for test method E2177.
E2177-11 Standard Test Method for Measuring the Coefficient of Retroreflected Luminance (RL) of Pavement Markings in a Standard Condition of Wetness
Committee E12 on Color and Appearance
Subcommittee E12.10 on Retroreflection