ASTM D6628-23

Standard Specification for Color of Retroreflective Pavement Marking Materials

ABSTRACT
This specification covers the daytime and nighttime color of retroreflective pavement marking materials, both painted and tape lines, including thermoplastic, epoxy and other types, used for traffic control lane markings and symbols on road surfaces. This specification is not applicable to the testing, for quality control purposes, of marking material without added drop-on beads. The performance requirements for which the marking materials shall be tested on and conform accordingly to are the daytime and nighttime chromaticity limits, retroreflectance, and daytime lightness limits (Y tristimulus coordinate).
SCOPE
1.1 This specification covers the daytime and nighttime color of retroreflective pavement marking materials used for traffic control lane markings and symbols on road surfaces.  
1.2 This specification applies to all retroreflective pavement markings (markings that include retroreflective optics residing on the surface) except structured pavement markings as defined in 3.2.5.  
1.3 This specification is not applicable to pavement markings that do not include retroreflective optics on the surface.  
1.4 This specification does not address any requirements other than the color of retroreflective pavement markings.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5.1 Exception—This specification is noted to be an SI document, where angles are generally expressed in radians. However, as angles used in retroreflection have historically been identified in degrees, the International Committee for Weights and Measures (CIPM, Comité International des Poids et Mesures) accepts the use of degrees with SI units, and European Normatives and documents from the International Commission on Illumination (CIE) use degrees for retroreflection geometry.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Oct-2023
• ICS: 93.080.20 - Road construction materials
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.38 - Highway Traffic Control Materials

Relations

• Replaces: ASTM D6628-16 - Standard Specification for Color of Pavement Marking Materials
• Effective Date: 01-Nov-2023
• Referred By: ASTM D4505-12(2022) - Standard Specification for Preformed Retroreflective Pavement Marking Tape for Extended Service Life
• Effective Date: 01-Nov-2023
• Referred By: ASTM D2205-20 - Standard Guide for Selection of Tests for Traffic Paints
• Effective Date: 01-Nov-2023
• Referred By: ASTM D8367-21 - Standard Practice for Making a Laboratory Pavement Marking Sample Using a Pavement Marking and Drop-on Particles
• Effective Date: 01-Nov-2023
• Referred By: ASTM D713-23 - Standard Practice for Conducting Road Service Tests on Fluid Traffic Marking Materials
• Effective Date: 01-Nov-2023
• Referred By: ASTM E2367-05(2019) - Standard Test Method for Measurement of Nighttime Chromaticity of Pavement Marking Materials Using a Portable Retroreflection Colorimeter
• Effective Date: 01-Nov-2023
• Referred By: ASTM D4592-12(2022) - Standard Specification for Preformed Retroreflective Pavement Marking Tape for Limited Service Life
• Effective Date: 01-Nov-2023
• Referred By: ASTM D7942-15(2023) - Standard Specification for Thermoplastic Pavement Markings in Non Snow Plow Areas
• Effective Date: 01-Nov-2023

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6628 − 23
Standard Specification for
1
Color of Retroreflective Pavement Marking Materials
This standard is issued under the fixed designation D6628; 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.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers the daytime and nighttime
D4061 Test Method for Retroreflectance of Horizontal Coat-
color of retroreflective pavement marking materials used for
ings
traffic control lane markings and symbols on road surfaces.
D4505 Specification for Preformed Retroreflective Pave-
1.2 This specification applies to all retroreflective pavement
ment Marking Tape for Extended Service Life
markings (markings that include retroreflective optics residing
D4592 Specification for Preformed Retroreflective Pave-
on the surface) except structured pavement markings as defined
ment Marking Tape for Limited Service Life
in 3.2.5.
D7585/D7585M Practice for Evaluating Retroreflective
Pavement Markings Using Portable Hand-Operated In-
1.3 This specification is not applicable to pavement mark-
struments
ings that do not include retroreflective optics on the surface.
E284 Terminology of Appearance
1.4 This specification does not address any requirements E308 Practice for Computing the Colors of Objects by Using
other than the color of retroreflective pavement markings. the CIE System
E811 Practice for Measuring Colorimetric Characteristics of
1.5 The values stated in SI units are to be regarded as
Retroreflectors Under Nighttime Conditions
standard. No other units of measurement are included in this
E1349 Test Method for Reflectance Factor and Color by
standard.
Spectrophotometry Using Bidirectional (45°:0° or 0°:45°)
1.5.1 Exception—This specification is noted to be an SI
Geometry
document, where angles are generally expressed in radians.
E2367 Test Method for Measurement of Nighttime Chroma-
However, as angles used in retroreflection have historically
ticity of Pavement Marking Materials Using a Portable
been identified in degrees, the International Committee for
Retroreflection Colorimeter
3
Weights and Measures (CIPM, Comité International des Poids
2.2 CIE Publications:
et Mesures) accepts the use of degrees with SI units, and
No. 15.2 Colorimetry
European Normatives and documents from the International
No. 39.2 Recommendations for Surface Colours for Visual
Commission on Illumination (CIE) use degrees for retroreflec-
Signalling
tion geometry. 4
2.3 Federal Register:
23 CFR Chapter 1, Subchapter G, Part 655, Subpart F Traffic
1.6 This international standard was developed in accor-
Control Devices on Federal-Aid and Other Streets and
dance with internationally recognized principles on standard-
Highways
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
3. Terminology
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3.1 Definitions:
3.1.1 Definitions in Practice E308 and of appearance terms
in Terminology E284 are applicable to this specification.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
1
This specification is under the jurisdiction of ASTM Committee D04 on Road Standards volume information, refer to the standard’s Document Summary page on
and Paving Materials and is the direct responsibility of Subcommittee D04.38 on the ASTM website.
3
Highway Traffic Control Materials. Available from USNC-CIE Publications Office, TLA Lighting Consultants,
Current edition approved Nov. 1, 2023. Published November 2023. Originally Inc., 7 Pond Street, Salem, MA 01970.
4
approved in 2001. Last previous edition approved in 2016 as D6628 – 16. DOI: Available from U.S. Government Publishing Office (GPO), 732 N. Capitol St.,
10.1520/D6628-23. NW, Washington, DC 20401, http://www.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D6628 − 23
3.2 Definitions of Terms Specific to This Standard: viewing conditions. The geometry of the instrument
illumination, with respect to the profiles, can also cause
3.2.1 in-service pavement markings—pavement markings
misleading results. The small illumination field in this type of
that have been applied in the field longer than 30 days.
instrumentation ma
...

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: D6628 − 16 D6628 − 23
Standard Specification for
1
Color of Retroreflective Pavement Marking Materials
This standard is issued under the fixed designation D6628; 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.
1. Scope
1.1 This specification covers the daytime and nighttime color of retroreflective pavement marking materials used for traffic control
lane markings and symbols on road surfaces. It is intended to apply throughout the service life of the material.
1.2 This specification applies to both painted and tape lines, including thermoplastic, epoxy and other types.all retroreflective
pavement markings (markings that include retroreflective optics residing on the surface) except structured pavement markings as
defined in 3.2.5.
1.3 This specification is not applicable to the testing, for quality control purposes, of marking material without added drop-on
beads. pavement markings that do not include retroreflective optics on the surface.
1.4 In addition, it does not describe This specification does not address any requirements other than color such as
retroreflectance.the color of retroreflective pavement markings.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5.1 Exception—This specification is noted to be aan SI document, where angles are generally expressed in radians. However,
as angles used in retroreflection have historically been identified in degrees, the International Committee for Weights and Measures
(CIPM, Comité International des Poids et Mesures) accepts the use of degrees with SI units, and European Normatives and
documents from the International Commission on Illumination (CIE) use degrees for retroreflection geometry.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D4061 Test Method for Retroreflectance of Horizontal Coatings
D4505 Specification for Preformed Retroreflective Pavement Marking Tape for Extended Service Life
D4592 Specification for Preformed Retroreflective Pavement Marking Tape for Limited Service Life
D7585/D7585M Practice for Evaluating Retroreflective Pavement Markings Using Portable Hand-Operated Instruments
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 Oct. 1, 2016Nov. 1, 2023. Published October 2016November 2023. Originally approved in 2001. Last previous edition approved in 20152016
as D6628 – 03 (2015).D6628 – 16. DOI: 10.1520/D6628-16.10.1520/D6628-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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 ----------------------
D6628 − 23
E284 Terminology of Appearance
E308 Practice for Computing the Colors of Objects by Using the CIE System
E811 Practice for Measuring Colorimetric Characteristics of Retroreflectors Under Nighttime Conditions
E1349 Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional (45°:0° or 0°:45°) Geometry
E2367 Test Method for Measurement of Nighttime Chromaticity of Pavement Marking Materials Using a Portable Retrore-
flection Colorimeter
3
2.2 CIE Publications:
No. 15.2 Colorimetry
No. 39.2 Recommendations for Surface Colours for Visual Signalling
4
2.3 Federal Register:
23 CFR Chapter 1, Subchapter G, Part 655, Subpart F Traffic Control Devices on Federal-Aid and Other Streets and Highways
3. Terminology
3.1 Definitions:
3.1.1 Definitions in Practice E308 and of appearance terms in Terminology E284 are applicable to this specification.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 in-service pavement markings—pavement markings th
...