Designation:E2366–05StandardTestMethodforMeasurementofDaytimeChromaticityofPavementMarkingMaterialsUsingaPortableReflectionColorimeter1ThisstandardisissuedunderthefixeddesignationE2366;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversmeasurementofthedaytimechromaticitycoordinates(x,y)ofhorizontalpavementmark-ings,suchastrafficstripesandsurfacesymbols,andpavementsurfacesunderdiffuseillumination,usingaportablereflectioncolorimeterthatcanbeplacedonthesurfacetomeasurethechromaticityinaparticularviewingdirection.1.2Theco-viewingangleofthereflectioncolorimeteraffectsthereadings.AsspecifiedbytheEuropeanCommitteeforStandardization(CENEN1436),theco-viewingangleshallbe2.29°.1.3Thistestmethodisintendedtobeusedforfieldmeasurementofpavementmarkingsbutmaybeusedtomeasurethechromaticityandtheluminancecoefficientunderdiffuseilluminationofmaterialsonsamplepanelsbeforeplacingthemarkingmaterialinthefield.1.4Theportablereflectioncolorimetermayintegratemea-surementoftheluminancecoefficientunderdiffuseillumina-tionQdaccordingtoTestMethodE2302andthusbeanintegratedreflectometer/reflectioncolorimeter.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D6628SpecificationforColorofPavementMarkingMa-terialsE284TerminologyofAppearanceE308PracticeforComputingColorsofObjectsbyusingtheCIESystemE811PracticeforMeasuringColorimetricCharacteristicsofRetroreflectorsunderNighttimeConditionsE2302TestMethodforMeasurementoftheLuminanceCoefficientunderDiffuseIlluminationofPavementMark-ingMaterialswithCEN-PrescribedGeometryUsingaPortableReflectome...
