Designation:D7942−15StandardSpecificationforThermoplasticPavementMarkingsinNonSnowPlowAreas1ThisstandardisissuedunderthefixeddesignationD7942;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversareflectorizedthermoplasticbasedpavementstripingmaterialoftheclassthatisappliedtotheroadsurfaceinamoltenstatebyscreed/extrusionorribbonextrusionmeans.Retroreflectivityofthepavementmarkingcompoundisachievedinitiallybysurfaceapplicationofretroreflectiveopticsatthetimeofpavementmarkingappli-cation.Uponcoolingtonormalpavementtemperature,thepavementmarkingmaterialproducesanadherentreflectorizedstripeofspecifiedthicknessandwidthcapableofresistingdeformationbytraffic.Thepavementmarkingcompoundincludesretroreflectiveoptics(glassbeadsorcompositeoptics,orboth)thatareincorporatedintothematerialatthetimeofmanufacturethatprovideretroreflectivepropertiesduringtheservicelifeofthematerial.1.1.1Thisspecificationislimitedto:1.1.1.1Longitudinalapplicationsinnonsnowplowareas,1.1.1.2Standard(non-profile)pavementmarkingapplications,and1.1.1.3Applicationsonsmoothasphaltorconcretesurfaces.Asphaltsealcoatapplications,whichuselargeaggregateresultinginaveryrough,opengradefinish,areexcludedfromthisspecification.1.1.2Thisspecificationincludes:1.1.2.1Compositionalandphysicalpropertyrequirementsofthethermoplasticpavementmarkingmaterial,1.1.2.2Requirementsfortheopticsthatareusedtoreflec-torizethethermoplasticpavementmarkingmaterialafterapplication,1.1.2.3Fieldperformancerequirementsfortheinstalledthermoplasticpavementmarkings,and1.1.2.4Materialapplicationrequirements.1.2Thevaluesstatedininch-poundsunitsaretobere-gardedasthestandardexceptwherenotedinthedocument.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconside...
