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ASTM D4956-07

(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.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

Status
Historical
Publication Date
14-Mar-2007
ICS
93.080.30 - Road equipment and installations
Technical Committee
D04 - Road and Paving Materials
Drafting Committee
D04.38 - Highway Traffic Control Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D4956-05 - Standard Specification for Retroreflective Sheeting for Traffic Control
Effective Date
15-Mar-2007
Replaced By
ASTM D4956-07e1 - Standard Specification for Retroreflective Sheeting for Traffic Control
Effective Date
15-Mar-2007
Referred By
ASTM E3165-18 - Standard Test Method for Nighttime Retroreflected Chromaticity of Retroreflective Sheeting
Effective Date
15-Mar-2007
Referred By
ASTM E1709-16(2022) - Standard Test Method for Measurement of Retroreflective Signs Using a Portable Retroreflectometer at a 0.2 Degree Observation Angle
Effective Date
15-Mar-2007
Referred By
ASTM D8514/D8514M-23 - Standard Specification for Flexible, Retroreflective Sheeting for Use in High Visibility Vehicle Markings
Effective Date
15-Mar-2007
Referred By
ASTM E2706-18 - Standard Practice for Equipment Technology and Operations for Mobile and Plant-Based Secure Destruction Safety Requirements
Effective Date
15-Mar-2007

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ASTM D4956-07 - Standard Specification for Retroreflective Sheeting for Traffic ControlASTM D4956-07 - Standard Specification for Retroreflective Sheeting for Traffic Control
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ASTM D4956-07 - Standard Specification for Retroreflective Sheeting for Traffic Control
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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: D 4956 – 07
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.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope E 991 Practice for Color Measurement of Fluorescent
Specimens Using the One-Monochromator Method
1.1 This specification covers flexible, non-exposed glass
E 1164 Practice for Obtaining Spectrometric Data for
beadlensandmicroprismatic,retroreflectivesheetingdesigned
Object-Color Evaluation
for use on traffic control signs, delineators, barricades, and
E1247 PracticeforDetectingFluorescenceinObject-Color
other devices.
Specimens by Spectrophotometry
1.2 The values stated in inch-pound units are to be regarded
E1347 Test Method for Color and Color-Difference Mea-
as the standard. The values given in parentheses are for
surement by Tristimulus Colorimetry
information only.
E1349 Test 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,
E2152 Practice 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
E2153 Practice for Obtaining Bispectral Photometric Data
practices and determine the applicability of regulatory limita-
for Evaluation of Fluorescent Color
tions prior to use.
E2301 TestMethodforDaytimeColorimetricPropertiesof
2. Referenced Documents
Fluorescent Retroreflective Sheeting and Marking Materi-
2
als for High Visibility Traffic Control and Personal Safety
2.1 ASTM Standards:
Applications Using 45°:Normal Geometry
B209 Specification for Aluminum and Aluminum-Alloy
G7 Practice for Atmospheric Environmental Exposure
Sheet and Plate
Testing of Nonmetallic Materials
B209M Specification for Aluminum and Aluminum-Alloy
G147 Practice for Conditioning and Handling of Nonme-
Sheet and Plate [Metric]
tallic Materials for Natural andArtificial Weathering Tests
B449 Specification for Chromates on Aluminum
G151 Practice for Exposing Nonmetallic Materials in Ac-
D523 Test Method for Specular Gloss
celerated Test Devices that Use Laboratory Light Sources
E284 Terminology of Appearance
G152 PracticeforOperatingOpenFlameCarbonArcLight
E308 Practice for Computing the Colors of Objects by
Apparatus for Exposure of Nonmetallic Materials
Using the CIE System
E808 Practice for Describing Retroreflection
3. Terminology
E810 Test Method for Coefficient of Retroreflection of
3.1 Definitions—Definitions of terms are as described in
Retroreflective Sheeting Utilizing the Coplanar Geometry
Terminology E284 and Practice E808.
E811 Practice for Measuring Colorimetric Characteristics
3.2 Definitions of Terms Specific to This Standard:
of Retroreflectors Under Nighttime Conditions
3.2.1 reboundable sheeting, n—retroreflective material in-
tended to be attached to flexible impact resistant plastic
1
This specification is under the jurisdiction ofASTM Committee D04 on Road
devices, such as traffic drum-like channelizing devices.
and Paving Materials and is the direct responsibility of Subcommittee D04.38 on
Highway Traffic Control Materials.
4. Classification
Current edition approved March 15, 2007. Published March 2007. Originally
4.1 Retroreflective sheeting shall consist of a white or
approved in 1989. Last previous edition approved in 2005 as D4956–05.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
colored sheeting having a smooth outer surface and that
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
essentially has the property of a retroreflector over its entire
Standards volume information, refer to the standard’s Document Summary page on
surface. There are ten types and five classes of retroreflective
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D4956–07
sheeting. Types are determined by conformance to the retrore- 4.2.6 Type VI—Anelastomerichigh-intensityretroreflective
flectance, color, and durability requirements listed in 6.1 and sheeting without adhesive. This sheeting is typically a vinyl
may be of any construction providing that those requirements
microprisma
...

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ABSTRACT
This specification covers reflectorized thermoplastic based pavement striping material of the class that is applied to the road surface in a molten state by screed/extrusion or ribbon extrusion means. It deals with longitudinal applications in non snow plow areas, standard (non-profile) pavement marking applications, and applications on smooth asphalt or concrete surfaces. It does not include asphalt seal coat applications, which use large aggregate resulting in a very rough, open grade finish. This specification establishes requirements with respect to chemical composition and physical property of the thermoplastic pavement marking material, requirements for the optics that are used to reflectorize the thermoplastic pavement marking material after application, field performance requirements for the installed thermoplastic pavement markings, and material application requirements.
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1.1 This specification covers a reflectorized thermoplastic-based pavement striping material of the class that is applied to the road surface in a molten state by screed/extrusion or ribbon extrusion means. Retroreflectivity of the pavement marking compound is achieved initially by surface application of retroreflective optics at the time of pavement marking application. Upon cooling to normal pavement temperature, the pavement marking material produces an adherent reflectorized stripe of specified thickness and width capable of resisting deformation by traffic. The pavement marking compound includes retroreflective optics (glass beads or composite optics, or both) that are incorporated into the material at the time of manufacture that provide retroreflective properties during the service life of the material.  
1.1.1 This specification is limited to:
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1.1.2 This specification includes:
1.1.2.1 Compositional and physical property requirements of the thermoplastic pavement marking material,
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Standard Specification for Retroreflective Sheeting for Traffic Control

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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 does not address inks, overlays, or other imaging methods that may be applied to retroreflective sheeting material to create traffic signs or other devices.  
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5.1 This test method provides a structured procedure to establish a penetration rating for vehicle perimeter barriers subjected to a vehicle impact. Knowing the penetration rating helps to select an appropriate barrier for site-specific conditions around a facility.  
5.2 The barrier penetration rating does not imply that a barrier will perform as rated in all site conditions, approach routes, and topography. Also, only single-specimen tests at a specified impact location are required by this test method, and therefore, not all points of impact can be tested and validated for the penetration rating. Other impact locations may respond differently.
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Standard Practice for Sample Preparation of Thermoplastic Pavement Marking Materials

SIGNIFICANCE AND USE
5.1 This practice provides a standard procedure for the preparation of thermoplastic pavement marking material test specimens prior to testing for various properties as called for in the governing specification. Specimens that are prepared using this standard methodology yield test results that are consistent with the material from which it was sampled. Test results from specimens can be used to determine compliance of the thermoplastic pavement marking material to the specification. This practice can also be used by manufacturers of these materials to prepare specimens for testing to determine the uniformity of thermoplastic pavement marking materials from batch to batch.  
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SCOPE
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Standard Practice for Solvent and Fuel Resistance of Traffic Paint

SIGNIFICANCE AND USE
4.1 Traffic paints must have good resistance to motor oil and fuel drippings on the highway. This test method describes the procedure necessary to evaluate the resistance of traffic paint to reference test fluids in order to simulate this type of action.
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