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ASTM D7942-15(2023)

(Specification)

Standard Specification for Thermoplastic Pavement Markings in Non Snow Plow Areas

Standard Specification for Thermoplastic Pavement Markings in Non Snow Plow Areas

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.
SCOPE
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:
1.1.1.1 Longitudinal applications in non snow plow areas,
1.1.1.2 Standard (non-profile) pavement marking applications, and
1.1.1.3 Applications on smooth asphalt or concrete surfaces. Asphalt seal coat applications, which use large aggregate resulting in a very rough, open grade finish, are excluded from this specification.  
1.1.2 This specification includes:
1.1.2.1 Compositional and physical property requirements of the thermoplastic pavement marking material,
1.1.2.2 Requirements for the optics that are used to reflectorize the thermoplastic pavement marking material after application,
1.1.2.3 Field performance requirements for the installed thermoplastic pavement markings, and
1.1.2.4 Material application requirements.  
1.2 The values stated in inch-pounds units are to be regarded as the standard except where noted in the document. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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
30-Apr-2023
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

Refers
ASTM D36/D36M-14(2020) - Standard Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)
Effective Date
01-May-2020

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ASTM D7942-15(2023) - Standard Specification for Thermoplastic Pavement Markings in Non Snow Plow AreasASTM D7942-15(2023) - Standard Specification for Thermoplastic Pavement Markings in Non Snow Plow Areas
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ASTM D7942-15(2023) - Standard Specification for Thermoplastic Pavement Markings in Non Snow Plow Areas
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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: D7942 − 15 (Reapproved 2023)
Standard Specification for
Thermoplastic Pavement Markings in Non Snow Plow
1
Areas
This standard is issued under the fixed designation D7942; 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 The values given in parentheses are mathematical conversions
to SI units that are provided for information only and are not
1.1 This specification covers a reflectorized thermoplastic-
considered standard.
based pavement striping material of the class that is applied to
1.3 This standard does not purport to address all of the
the road surface in a molten state by screed/extrusion or ribbon
safety concerns, if any, associated with its use. It is the
extrusion means. Retroreflectivity of the pavement marking
responsibility of the user of this standard to establish appro-
compound is achieved initially by surface application of
priate safety, health, and environmental practices and deter-
retroreflective optics at the time of pavement marking appli-
mine the applicability of regulatory limitations prior to use.
cation. Upon cooling to normal pavement temperature, the
1.4 This international standard was developed in accor-
pavement marking material produces an adherent reflectorized
dance with internationally recognized principles on standard-
stripe of specified thickness and width capable of resisting
ization established in the Decision on Principles for the
deformation by traffic. The pavement marking compound
Development of International Standards, Guides and Recom-
includes retroreflective optics (glass beads or composite optics,
mendations issued by the World Trade Organization Technical
or both) that are incorporated into the material at the time of
Barriers to Trade (TBT) Committee.
manufacture that provide retroreflective properties during the
service life of the material.
2. Referenced Documents
1.1.1 This specification is limited to:
2
1.1.1.1 Longitudinal applications in non snow plow areas, 2.1 ASTM Standards:
D36/D36M Test Method for Softening Point of Bitumen
1.1.1.2 Standard (non-profile) pavement marking
(Ring-and-Ball Apparatus)
applications, and
D92 Test Method for Flash and Fire Points by Cleveland
1.1.1.3 Applications on smooth asphalt or concrete surfaces.
Open Cup Tester
Asphalt seal coat applications, which use large aggregate
D4960 Test Method for Evaluation of Color for Thermoplas-
resulting in a very rough, open grade finish, are excluded from
tic Pavement Marking Materials
this specification.
D6628 Specification for Color of Pavement Marking Mate-
1.1.2 This specification includes:
rials
1.1.2.1 Compositional and physical property requirements
D7307 Practice for Sampling of Thermoplastic Pavement
of the thermoplastic pavement marking material,
Marking Materials
1.1.2.2 Requirements for the optics that are used to reflec-
D7308 Practice for Sample Preparation of Thermoplastic
torize the thermoplastic pavement marking material after
Pavement Marking Materials
application,
D7585/D7585M Practice for Evaluating Retroreflective
1.1.2.3 Field performance requirements for the installed
Pavement Markings Using Portable Hand-Operated In-
thermoplastic pavement markings, and
struments
1.1.2.4 Material application requirements.
D7735 Test Method for Type A Durometer Hardness Testing
of Thermoplastic Pavement Marking at Elevated Tem-
1.2 The values stated in inch-pounds units are to be re-
peratures
garded as the standard except where noted in the document.
E313 Practice for Calculating Yellowness and Whiteness
Indices from Instrumentally Measured Color Coordinates
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
2
Highway Traffic Control Materials. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2023. Published May 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2015. Last previous edition approved in 2015 as D7942 – 15. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D7942-15R23. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7942 − 15 (2023)
E1710 Test Method for Measurement of Retroreflective 4. Classificati
...

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4.1 There have been instances in the past in which undesired collisions between authorized vehicles and AVBS have occurred. Properly selected, designed, and installed safety devices that are able to inhibit deployment of active barriers when authorized vehicles are in the hazard detection space, in direct proximity to the barrier, can minimize the likelihood that such accidents occur.  
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4.4 It is also recognized that there may be particular conditions in which an owner may determine that it is not acceptable to have safety devices installed in AVBS. For example, there may be conditions under which the security risks are determined to be more important to an owner than the possible safety hazards. In such circumstances, the owner shall accept the safety risks and possible consequences that are associated with such a determination that safety devices will not be used.  
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1.1 This practice is intended to provide methods for selecting, integrating, and verification of active vehicle barrier safety devices so that vehicle barrier systems are reliably and safely controlled when in operation.  
1.2 There are a number of risks associated with the operation and use of active vehicle barrier systems (AVBS). One of the risks is that of undesired collision between an active vehicle barrier (AVB) and an authorized vehicle. Such risks can be minimized through proper design, construction, installation, operation, and training in the use of such systems.  
1.3 The proper selection, installation, and use of safety devices that will prevent an AVBS from activating or deploying while an authorized vehicle is transiting the barrier, or when such an authorized vehicle is stopped while a portion of the vehicle is located in the path of or in an unsafe proximity to a barrier, can minimize the likelihood of unintended collision between a barrier and authorized vehicle.  
1.4 For this practice, safety refers to the ability of the barrier to operate without causing unintended damage to vehicles or injury to people via operation or deployment of the barrier, when an authorized vehicle is transiting the barrier. Security refers to the ability to operate or deploy the barrier to serve its intended purpose of stopping an unauthorized vehicle from passing through the barrier location.  
1.5 Pedestrians are excluded from the scope of this practice. It is assumed, for the purposes of this practice, that pedestrians are excluded from potentially hazardous locations in the immediate vicinity of AVBS moving components. It is recognized that authorized pedestrians may be present in the area of the movable AVBS for required purposes, such as inspection of vehicles that are stopped. The presence of “casual” pedestrians shall be kept away from the movable elements of the AVBS.  
1.6 This practice is not intended to addr...

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ASTM E1709-16(2022)(Test Method)
Standard Test Method for Measurement of Retroreflective Signs Using a Portable Retroreflectometer at a 0.2 Degree Observation Angle

SIGNIFICANCE AND USE
5.1 Measurements made by this test method are related to the night time brightness of retroreflective traffic signs approximately facing the driver of a mid-sized automobile equipped with tungsten filament headlights at about 200 m distance.  
5.2 Retroreflective material used on traffic signs degrades with time and requires periodic measurement to ensure that the performance of the retroflection provides adequate safety to the driver.  
5.3 The quality of the sign as to material used, age, and wear pattern will have an effect on the coefficient of retroreflection. These conditions need to be observed and noted by the user.  
5.4 This test method is not intended for use for the measurement of signs when the instrument entrance and observation angles differ from those specified herein.
SCOPE
1.1 This test method covers measurement of the retroreflective properties of sign materials such as traffic signs and symbols (vertical surfaces) 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 sign material to measure the retroreflection in a standard geometry. The measurements can be compared to minimum requirements to determine the need for replacement. Entrance and observation angles specified in this test method are those used currently in the United States and may differ from the angles used elsewhere in the world.  
1.2 This test method is intended to be used for the field measurement of traffic signs but may be used to measure the performance of materials before placing the sign in the field or before placing the sign material on the sign face.  
1.3 This test method covers measurements at a 0.2 degree observation angle. See Test Method E2540 for measurements at a 0.5 degree observation angle.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

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