Designation:E1710−11StandardTestMethodforMeasurementofRetroreflectivePavementMarkingMaterialswithCEN-PrescribedGeometryUsingaPortableRetroreflectometer1ThisstandardisissuedunderthefixeddesignationE1710;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversmeasurementoftheretroreflec-tivepropertiesofhorizontalpavementmarkingmaterialscontainingretroreflectingbeads,suchastrafficstripesandsurfacesymbols,usingaportableretroreflectometerthatcanbeplacedontheroaddelineationtomeasuretheretroreflectionataprescribedgeometry.NOTE1—Therestrictiontobeadbasedmaterialsisforthepurposeofensuringasufficientlygradualopticalresponsefunction(frompointsofthesourceaperturetopointsofthereceiveraperture)toallowgeneroussizedinstrumentsourceandreceiverapertures.1.2Theentranceandobservationanglesoftheretroreflec-tometeraffectthereadings.AsspecifiedbytheEuropeanCommitteeforStandardization(CEN),theentranceandobser-vationanglesshallbe88.76°and1.05°,respectively.1.3Thistestmethodisintendedtobeusedforfieldmeasurementofpavementmarkingsbutmaybeusedtomeasuretheperformanceofmaterialsonsamplepanelsbeforeplacingthemarkingmaterialinthefield.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D4061TestMethodforRetroreflectanceofHorizontalCoat-ingsD6359SpecificationforMinimumRetroreflectanceofNewlyAppliedPavementMarkingUsingPortableHand-OperatedInstruments(Withdrawn2006)3E177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE284TerminologyofAppearanceE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodE809Pract...
