ASTM International - ASTM E1743-96
Standard Practice for Selection and Use of Portable Retroreflectomers for the Measurement of Pavement Marking Materials (Withdrawn 2003)
|Publication Date:||10 May 1996|
|ICS Code (Colours and measurement of light):||17.180.20|
|ICS Code (Road equipment and installations):||93.080.30|
1.1 This practice covers the selection and use of a portable retroreflectometers for the measurement at a prescribed geometry of the retroreflective properties of horizontal pavement marking materials containing glass spheres, such as traffic stripes and surface symbols.
1.2 The entrance and observation angles provided in the retroreflectometer greatly affect the test results and must be a major consideration in the selection of the instrument. Information on the relationship between instrument geometry and viewing geometry is provided in Section 5. Information on viewing geometry is provided in Table 1. Information on the relationship between viewing geometry and coefficient of retroreflected luminance, RL is given in fig. 1.
1.3 This practice is intended to be used for selection of portable retroreflectrometers
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.