Designation:E2301−12StandardTestMethodforDaytimeColorimetricPropertiesofFluorescentRetroreflectiveSheetingandMarkingMaterialsforHighVisibilityTrafficControlandPersonalSafetyApplicationsUsing45°:NormalGeometry1ThisstandardisissuedunderthefixeddesignationE2301;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribestheinstrumentalmeasure-mentofthecolorimetricproperties(CIEtristimulusvalues,luminancefactors,andchromaticitycoordinates)offluorescent-retroreflectivesheetingandmarkingmaterialswhenilluminatedbydaylight.1.2Thistestmethodisgenerallyapplicabletoanysheetingormarkingmaterialhavingcombinedfluorescentandretrore-flectivepropertiesusedfordaytimehighvisibilitytrafficcontrolandpersonalsafetyapplications.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D2244PracticeforCalculationofColorTolerancesandColorDifferencesfromInstrumentallyMeasuredColorCoordinatesE179GuideforSelectionofGeometricConditionsforMeasurementofReflectionandTransmissionPropertiesofMaterialsE284TerminologyofAppearanceE308PracticeforComputingtheColorsofObjectsbyUsingtheCIESystemE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodE1164PracticeforObtainingSpectrometricDataforObject-ColorEvaluationE1767PracticeforSpecifyingtheGeometriesofObserva-tionandMeasurementtoCharacterizetheAppearanceofMaterialsE2152PracticeforComputingtheColorsofFluorescentObjectsfromBispectralPhotometricDataE2153PracticeforObtainingBispe...
