ASTM D4956-16
(Specification)Standard Specification for Retroreflective Sheeting for Traffic Control
Standard Specification for Retroreflective Sheeting for Traffic Control
SCOPE
1.1 This specification covers flexible, non-exposed glass bead lens and microprismatic, retroreflective sheeting designed for use on traffic control signs, delineators, barricades, and other devices. This specification covers the performance of retroreflective sheeting materials and does not specifically address inks, overlays, or other imaging methods that may be applied to retroreflective sheeting material to create traffic signs or other devices.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this specification. 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.
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Designation:D4956 −16
StandardSpecification for
1
Retroreflective Sheeting for Traffic Control
This standard is issued under the fixed designation D4956; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope E808Practice for Describing Retroreflection
E810Test Method for Coefficient of Retroreflection of
1.1 This specification covers flexible, non-exposed glass
Retroreflective Sheeting Utilizing the Coplanar Geometry
beadlensandmicroprismatic,retroreflectivesheetingdesigned
E811Practice for Measuring Colorimetric Characteristics of
for use on traffic control signs, delineators, barricades, and
Retroreflectors Under Nighttime Conditions
other devices. This specification covers the performance of
E991Practice for Color Measurement of Fluorescent Speci-
retroreflective sheeting materials and does not specifically
mens Using the One-Monochromator Method
address inks, overlays, or other imaging methods that may be
E1164PracticeforObtainingSpectrometricDataforObject-
applied to retroreflective sheeting material to create traffic
Color Evaluation
signs or other devices.
E1247Practice for Detecting Fluorescence in Object-Color
1.2 The values stated in inch-pound units are to be regarded
Specimens by Spectrophotometry
as standard. The values given in parentheses are mathematical
E1347Test Method for Color and Color-Difference Mea-
conversions to SI units that are provided for information only
surement by Tristimulus Colorimetry
and are not considered standard.
E1349Test Method for Reflectance Factor and Color by
1.3 The following safety hazards caveat pertains only to the
Spectrophotometry Using Bidirectional (45°:0° or 0°:45°)
test methods portion, Section 7, of this specification. This Geometry
standard does not purport to address all of the safety concerns,
E2152Practice for Computing the Colors of Fluorescent
if any, associated with its use. It is the responsibility of the user Objects from Bispectral Photometric Data
of this standard to establish appropriate safety and health
E2153Practice for Obtaining Bispectral Photometric Data
practices and determine the applicability of regulatory limita-
for Evaluation of Fluorescent Color
tions prior to use. E2301Test Method for Daytime Colorimetric Properties of
Fluorescent Retroreflective Sheeting and Marking Mate-
2. Referenced Documents
rials for High Visibility Traffic Control and Personal
2
2.1 ASTM Standards:
Safety Applications Using 45°:Normal Geometry
B209Specification for Aluminum and Aluminum-Alloy G7Practice for Atmospheric Environmental Exposure Test-
Sheet and Plate
ing of Nonmetallic Materials
B209MSpecification for Aluminum and Aluminum-Alloy G113Terminology Relating to Natural andArtificialWeath-
Sheet and Plate (Metric)
ering Tests of Nonmetallic Materials
B449Specification for Chromates on Aluminum G147Practice for Conditioning and Handling of Nonmetal-
E284Terminology of Appearance
lic Materials for Natural and Artificial Weathering Tests
E308PracticeforComputingtheColorsofObjectsbyUsing G151PracticeforExposingNonmetallicMaterialsinAccel-
the CIE System
erated Test Devices that Use Laboratory Light Sources
G155Practice for Operating XenonArc LightApparatus for
1
Exposure of Non-Metallic Materials
This specification is under the jurisdiction ofASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.38 on
2.2 Other Standards
Highway Traffic Control Materials.
ISO4892-2:2006PlasticsMethodsofexposuretolaboratory
Current edition approved March 1, 2016. Published March 2016. Originally
light sources - Part 2: Xenon-arc lamps
approved in 1989. Last previous edition approved in 2013 as D4956–13. DOI:
10.1520/D4956-16.
ISO 4892-2:2006/Amd.1:2009 Plastics Methods of expo-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
sure to laboratory light sources - Part 2: Xenon-arc lamps
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
EN12899-1:2007 Fixed, vertical road traffic signs - Part 1:
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Fixed signs
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D4956−16
3. Terminology 4.2.5 Type V—A retroreflective sheeting referred to as “su-
per high-intensity” that is typically a metalized microprismatic
3.1 Definitions—Definitions of terms are as described in
retroreflectiveelementmaterial.
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D4956 − 13 D4956 − 16
Standard Specification for
1
Retroreflective Sheeting for Traffic Control
This standard is issued under the fixed designation D4956; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This specification covers flexible, non-exposed glass bead lens and microprismatic, retroreflective sheeting designed for use
on traffic control signs, delineators, barricades, and other devices. This specification covers the performance of retroreflective
sheeting materials and does not specifically address inks, overlays, or other imaging methods that may be applied to retroreflective
sheeting material to create traffic signs or other devices.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this specification.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
2
2.1 ASTM Standards:
B209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate
B209M Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)
B449 Specification for Chromates on Aluminum
E284 Terminology of Appearance
E308 Practice for Computing the Colors of Objects by Using the CIE System
E808 Practice for Describing Retroreflection
E810 Test Method for Coefficient of Retroreflection of Retroreflective Sheeting Utilizing the Coplanar Geometry
E811 Practice for Measuring Colorimetric Characteristics of Retroreflectors Under Nighttime Conditions
E991 Practice for Color Measurement of Fluorescent Specimens Using the One-Monochromator Method
E1164 Practice for Obtaining Spectrometric Data for Object-Color Evaluation
E1247 Practice for Detecting Fluorescence in Object-Color Specimens by Spectrophotometry
E1347 Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry
E1349 Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional (45°:0° or 0°:45°) Geometry
E2152 Practice for Computing the Colors of Fluorescent Objects from Bispectral Photometric Data
E2153 Practice for Obtaining Bispectral Photometric Data for Evaluation of Fluorescent Color
E2301 Test Method for Daytime Colorimetric Properties of Fluorescent Retroreflective Sheeting and Marking Materials for High
Visibility Traffic Control and Personal Safety Applications Using 45°:Normal Geometry
G7 Practice for Atmospheric Environmental Exposure Testing of Nonmetallic Materials
G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
G147 Practice for Conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weathering Tests
G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
G155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials
1
This specification is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.38 on Highway
Traffic Control Materials.
Current edition approved Dec. 15, 2013March 1, 2016. Published January 2014March 2016. Originally approved in 1989. Last previous edition approved in 20112013
as D4956 – 11a.D4956 – 13. DOI: 10.1520/D4956-13.10.1520/D4956-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D4956 − 16
2.2 Other Standards
ISO 4892-2:2006 Plastics Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps
ISO 4892-
...
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