Designation:D4960−08(Reapproved2013)StandardTestMethodforEvaluationofColorforThermoplasticTrafficMarkingMaterials1ThisstandardisissuedunderthefixeddesignationD4960;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribestheinstrumentaldetermina-tionofcolorofthermoplastictrafficmarkingmaterialsusingtheCIEtristimuluscolormeasurementsystem.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D883TerminologyRelatingtoPlasticsD7307PracticeforSamplingofThermoplasticTrafficMark-ingMaterialsD7308PracticeforSamplePreparationofThermoplasticTrafficMarkingMaterialsE179GuideforSelectionofGeometricConditionsforMeasurementofReflectionandTransmissionPropertiesofMaterialsE284TerminologyofAppearanceE308PracticeforComputingtheColorsofObjectsbyUsingtheCIESystemE313PracticeforCalculatingYellownessandWhitenessIndicesfromInstrumentallyMeasuredColorCoordinatesE1164PracticeforObtainingSpectrometricDataforObject-ColorEvaluationE1347TestMethodforColorandColor-DifferenceMea-surementbyTristimulusColorimetryE1349TestMethodforReflectanceFactorandColorbySpectrophotometryUsingBidirectional(45°:0°or0°:45°)GeometryF412TerminologyRelatingtoPlasticPipingSystems3.Terminology3.1Definitions—DefinitionsareinaccordancewithTermi-nologyD883,E284andF412,unlessotherwiseindicated.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1thermochromism,n—achangeincolorthattakesplaceinthethermoplasticmaterialwithtemperaturechanges.3.2.2thermoplastictraffıc...
