Designation:D4383−21StandardSpecificationforPlowable,RaisedRetroreflectivePavementMarkers1ThisstandardisissuedunderthefixeddesignationD4383;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversseveraltypesofplowable,retroreflectivepavementmarkersforlanemarkinganddelin-eation.1.2Retroreflectivemarkersareintendedfornighttimevis-ibilityunderbothwetanddryconditions.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard,exceptwherenotedinthedocument.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.5Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section10,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety,health,andenvironmentalpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2A536SpecificationforDuctileIronCastingsC778SpecificationforStandardSandD5/D5MTestMethodforPenetrationofBituminousMate-rialsD36/D36MTestMethodforSofteningPointofBitumen(Ring-and-BallApparatus)D71TestMethodforRelativeDensityofSolidPitchandAsphalt(DisplacementMethod)D92TestMethodforFlashandFirePointsbyClevelandOpenCu...
