View Historical Standards for D4280:

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Document Designation and Title Year Select Item(s) D4280 Standard Specification for Extended Life Type, Nonplowable, Raised Retroreflective Pavement Markers 08 D4280 Standard Specification for Extended Life Type, Nonplowable, Raised Retroreflective Pavement Markers 04 D4280 Standard Specification for Extended Life Type, Nonplowable, Raised Retroreflective Pavement Markers 03 D4280 Standard Specification for Extended Life Type, Nonplowable, Raised Retroreflective Pavement Markers 02 D4280 Standard Specification for Extended Life Type, Nonplowable, Raised Retroreflective Pavement Markers 00