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ASTM E811

2009 Edition, December 1, 2009

Complete Document

Standard Practice for Measuring Colorimetric Characteristics of Retroreflectors Under Nighttime Conditions

Includes all amendments and changes through Reapproval Notice , 2015


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Product Details:

  • Revision: 2009 Edition, December 1, 2009
  • Published Date: January 2015
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 8
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This practice describes the instrumental determination of retroreflected chromaticity coordinates of retroreflectors. It includes the techniques used in a photometric range to measure retroreflected (nighttime) chromaticity with either a telecolorimeter or telespectroradiometer.

This practice covers the general measurement procedures. Additional requirements for specific tests and specifications are described in Section 7.

The description of the geometry used in the nighttime colorimetry of retroreflectors is described in Practice E808 and the methods for calculation of chromaticity are contained in Practice E308.

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.