ASTM E810-03(2008)
Historical Standard: ASTM E810-03(2008) Standard Test Method for Coefficient of Retroreflection of Retroreflective Sheeting Utilizing the Coplanar Geometry
SUPERSEDED (see Active link, below)
ASTM E810
1. Scope
1.1 This test method describes an instrument measurement of the retroreflective performance of retroreflective sheeting.
1.2 The user of this test method must specify the entrance and observation angles to be used, and may specify the rotation angles.
1.3 This test method is intended as a laboratory test and requires a facility that can be darkened sufficiently so that stray light does not affect the test results. The testing apparatus must be able to achieve the coplanar geometry.
1.4 Portable and bench retroreflection measuring equipment may be used to determine R A values provided the geometry and appropriate substitution standard reference panels, measured in accordance with this test method, are utilized. In this case the methods of Procedure B in Practice E 809 apply. Additional information on the use of portable retroreflectometers may be found in Test Method E 1709 .
1.5 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
E284 Terminology of Appearance
E308 Practice for Computing the Colors of Objects by Using the CIE System
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E808 Practice for Describing Retroreflection
E809 Practice for Measuring Photometric Characteristics of Retroreflectors
E1709 Test Method for Measurement of Retroreflective Signs Using a Portable Retroreflectometer at a 0.2 Degree Observation Angle
Other Document
CIE Publication N Retroreflection--Definition and Measurement Available from the CIE Webshop at http://www.cie.co.at.Keywords
coefficient of retroreflection; lighttransmission and reflection; retroreflection/retroreflectors; retroreflective sheeting;
ICS Code
ICS Number Code 17.180.20 (Colours and measurement of light)
DOI: 10.1520/E0810-03R08
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