Specifications include, but are not limited to: MARKER,PAVEMENT,STANDARD,1 WAY,WHITE/RED REFLECTIVE, ONE WAY, ABRASION RESISTANT LENS SURFACE, SQUARE SHOULDER, MINIMUM BASE DIMENSIONS OF 3 IN X 3 IN, MINIMUM HEIGHT .061 IN,MAXIMUM HEIGHT .080 IN, ASTM D4280M, DESIGNATED H AND F, MARKER MUST BE FROM THE APPROVED MATERIALS LIST (AML) FOR RAISED PAVEMENT MARKERS, MATERIAL CATEGORY RAISED PAVEMENT MARKERS, REFLECT,STANDARD/. MARKER,PAVEMENT,STANDARD,2 WAY,YELLOW REFLECTIVE, TWO WAY, ABRASION RESISTANT LENS SURFACE, SQUARE SHOULDER, MINIMUM BASE DIMENSIONS OF 3 IN X 3 IN, MINIMUM HEIGHT .061 IN,MAXIMUM HEIGHT .080 IN, ASTM D4280M, DESIGNATED H AND F, MARKER MUST BE FROM THE APPROVED MATERIALS LIST (AML) FOR RAISED PAVEMENT MARKERS, MATERIAL CATEGORY RAISED PAVEMENT MARKERS, REFLECT,STANDARD.