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Document Designation and Title Year Select Item(s) D4956 Standard Specification for Retroreflective Sheeting for Traffic Control 09e1 D4956 Standard Specification for Retroreflective Sheeting for Traffic Control 09 D4956 Standard Specification for Retroreflective Sheeting for Traffic Control 07e1 D4956 Standard Specification for Retroreflective Sheeting for Traffic Control 07 D4956 Standard Specification for Retroreflective Sheeting for Traffic Control 05 D4956 Standard Specification for Retroreflective Sheeting for Traffic Control 04 D4956 Standard Specification for Retroreflective Sheeting for Traffic Control 01a D4956 Standard Specification for Retroreflective Sheeting for Traffic Control 01 D4956 Standard Specification for Retroreflective Sheeting for Traffic Control 00 D4956 Standard Specification for Retroreflective Sheeting for Traffic Contol 90e1