Designation:D6628−03(Reapproved2010)´1StandardSpecificationforColorofPavementMarkingMaterials1ThisstandardisissuedunderthefixeddesignationD6628;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—2.1,7.1,andTable3wereeditoriallycorrectedand1.5andNote3wereeditoriallyaddedinJanuary2011.1.Scope1.1Thisspecificationcoversthedaytimeandnighttimecolorofretroreflectivepavementmarkingmaterialsusedfortrafficcontrollanemarkingsandsymbolsonroadsurfaces.Itisintendedtoapplythroughouttheservicelifeofthematerial.1.2Thisspecificationappliestobothpaintedandtapelines,includingthermoplastic,epoxyandothertypes.1.3Thisspecificationisnotapplicabletothetesting,forqualitycontrolpurposes,ofmarkingmaterialwithoutaddeddrop-onbeads.1.4Inaddition,itdoesnotdescriberequirementsotherthancolorsuchasretroreflectance.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5.1Exception—ThisspecificationisnotedtobeaSIdocument,whereanglesaregenerallyexpressedinradians.However,asanglesusedinretroreflectionhavehistoricallybeenidentifiedindegrees,theInternationalCommitteeforWeightsandMeasures(CIPM,ComitéInternationaldesPoidsetMesures)acceptstheuseofdegreeswithSIunits,andEuropeanNormativesanddocumentsfromtheInternationalCommissiononIllumination(CIE)usedegreesforretroreflec-tiongeometry.2.ReferencedDocuments2.1ASTMStandards:2D4061TestMethodforRetroreflectanceofHorizontalCoat-ingsD7585/D7585MPracticeforEvaluatingRetroreflectivePavementMarkingsUsingPortableHand-OperatedIn-strumentsE284TerminologyofAppearanceE308PracticeforComputingtheColorsofObjectsbyUsingtheCIESystemE811PracticeforMeasuringColorimetricCharacteristicsofRetroreflectorsUnderNighttimeConditionsE1349TestMethodforReflectanceFactorandColorbySpectrophotometryUsingBidirectional(45°:0°o...
