ASTM E1809-01
(Test Method)Standard Test Method for Measurement of High-Visibility Retroreflective-Clothing Marking Material Using a Portable Retroreflectometer (Withdrawn 2010)
Standard Test Method for Measurement of High-Visibility Retroreflective-Clothing Marking Material Using a Portable Retroreflectometer (Withdrawn 2010)
SIGNIFICANCE AND USE
Measurements made by this test method are related to the night time brightness of retroreflective marking materials approximately facing the driver of a mid-sized automobile equipped with tungsten filament headlights at about 200 m distance.
Retroreflective marking material used for pedestrian safety can degrade with time, exposure to sunlight, wear and cleaning, and the material requires periodic measurement to ensure that the performance of the retroreflective material provides adequate safety to the wearer.
This test method is not intended to be used for the measurement of retroreflective marking material for pedestrian safety at observation and entrance angles other than those specified herein.
5.3.1 For most materials, the values for the coefficient of retroreflection obtained at −4° entrance angle and 0.2° observation angle using this test method will be nearly the same as the values corresponding to +5° entrance angle and 0.2° observation angle, a geometry that is specified in some high-visibility clothing standards.
SCOPE
1.1 This test method covers the measurement of the retroreflective properties of high visibility pedestrian garments, such as vests, using a portable retroreflectometer that can be used in the field. The portable retroreflectometer is a hand-held instrument with a defined standard geometry that can be placed in contact with retroreflective marking material to measure the retroreflection. The measurements can be compared to minimum requirements to determine the need for replacement of the retroreflective material.
1.2 This test method is designed for measuring retroreflective marking materials that have an area equal to or greater than that of the aperture of the retroreflectometer.
1.3 This test method is intended to be used for field measurement of retroreflective marking materials, but may be used to measure the performance of materials before placing the clothing in use.
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.
WITHDRAWN RATIONALE
This test method covers the measurement of the retroreflective properties of high visibility pedestrian garments, such as vests, using a portable retroreflectometer that can be used in the field. The portable retroreflectometer is a hand-held instrument with a defined standard geometry that can be placed in contact with retroreflective marking material to measure the retroreflection. The measurements can be compared to minimum requirements to determine the need for replacement of the retroreflective material.
Formerly under the jurisdiction of Committee E12 on Color and Appearance, this test method was withdrawn in January 2010 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: E1809 – 01
Standard Test Method for
Measurement of High-Visibility Retroreflective-Clothing
1
Marking Material Using a Portable Retroreflectometer
This standard is issued under the fixed designation E1809; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
1.1 This test method covers the measurement of the retrore-
E808 Practice for Describing Retroreflection
flective properties of high visibility pedestrian garments, such
E809 PracticeforMeasuringPhotometricCharacteristicsof
as vests, using a portable retroreflectometer that can be used in
Retroreflectors
the field. The portable retroreflectometer is a hand-held instru-
E810 Test Method for Coefficient of Retroreflection of
ment with a defined standard geometry that can be placed in
Retroreflective Sheeting Utilizing the Coplanar Geometry
contact with retroreflective marking material to measure the
retroreflection. The measurements can be compared to mini-
3. Terminology
mum requirements to determine the need for replacement of
3.1 The terminology used in this test method, in general,
the retroreflective material.
agrees with that used in Terminology E284.
1.2 This test method is designed for measuring retroreflec-
3.2 Definitions—The delimiting phrase in retroreflection
tivemarkingmaterialsthathaveanareaequaltoorgreaterthan
applies to each of the following definitions when used outside
that of the aperture of the retroreflectometer.
the context of this or other retroreflection standards.
1.3 This test method is intended to be used for field
3.2.1 coeffıcient of retroreflection, R , n—of a plane retrore-
A
measurement of retroreflective marking materials, but may be
flecting surface, the ratio of the coefficient of luminous
used to measure the performance of materials before placing
intensity (R) of a plane retroreflecting surface to its area ( A),
I
the clothing in use.
−1 −2
expressed in candelas per lux per square metre (cd·lx ·m ).
1.4 This standard does not purport to address all of the
R 5 R/A (1)
safety concerns, if any, associated with its use. It is the
A I
responsibility of the user of this standard to establish appro-
3.2.2 datum axis, n—adesignatedhalf-linefromtheretrore-
priate safety and health practices and determine the applica-
flector center perpendicular to the retroreflector axis.
bility of regulatory limitations prior to use.
3.2.3 entrance angle, b, n—the angle between the illumi-
nation axis and the retroreflector axis.
2. Referenced Documents
3.2.4 entrance half-plane, n—the half-plane that originates
2
2.1 ASTM Standards:
on the line of the illumination axis and contains the retrore-
E284 Terminology of Appearance
flector axis.
E177 Practice for Use of the Terms Precision and Bias in
3.2.5 instrument standard, n—a working standard used to
ASTM Test Methods
standardize the portable retroreflectometer.
3.2.6 observation angle, n—the angle between the illumi-
nation axis and the observation axis.
1
This test method is under the jurisdiction of ASTM Committee E12 on Color
3.2.7 observation half-plane, n—the half-plane that origi-
and Appearance and is the direct responsibility of Subcommittee E12.10 on
nates on the line of the illumination axis and contains the
Retroreflection.
observation axis.
Current edition approved Dec. 10, 2001. Published February 2002. Originally
publishedasE1809-96.LastpreviouseditionE1809-96.DOI:10.1520/E1809-01.
3.2.8 orientation angle, v , n—the angle in a plane perpen-
s
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
diculartotheretroreflectoraxisfromtheentrancehalf-planeto
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the datum axis, measured counter-clockwise from the view-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. point of the source.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E1809 – 01
3.2.9 portable retroreflectometer, n—a hand-held instru- 5.3 This test method is not intended to be used for the
ment that can be used in the field or in the laboratory to measurementofretroreflectivemarkingmaterialforpedestrian
measure retroreflection. safety at observation and entrance angles other than those
specified herein.
3.2.9.1 Discussion—In this test method, portable retrore-
5.3.1 For most materials, the values for the coefficient of
flectometer refers to a hand-held instrument that ca
...
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