WK47965 proposed revision
WK51943 proposed revision
WK51942 proposed revision
WK3833 Test Method for determination of the coefficient of retroreflection of pavement markings using a 30 meter geometry mobile retroreflectometer.
WK54814 Measuring the Coefficient of Retroreflected Luminance of Pavement Markings Using the Spray Method in a Standard Condition of Wetness
WK52561 Measurement of Retroreflective Pavement Marking Materials with CEN-Prescribed Geometry Using a Mobile Vehicle Mounted Retroreflectometer
WK46365 New Test Method for Nighttime Retroreflective Chromaticity of Retroreflective Sheeting Using 0.33 Observation Angle, 5 Entrance Angle, and CIE Illuminant A