Apparatus is disclosed for forming a serial array of temporary raised pavement markers (TRPMs), which are disposed upon a single, common release liner, into a collated and nested array of the temporary raised pavement markers (TRPMs) such that the collated and nested array of temporary raised pavement markers (TRPMs) can be supplied to apparatus for dispensing and applying the temporary raised pavement markers (TRPMs) onto pavement surfaces. In accordance with a first embodiment of the apparatus, the plurality of temporary raised pavement markers (TRPMs) are formed from a single temporary raised pavement marker (TRPM) extrusion, the extrusion is cut, and subsequently, the markers are mounted upon the single, common release sheet or release liner which has a plurality of adhesive patches previously disposed thereon. The assembly, comprising the plurality of temporary raised pavement markers (TRPMs) and the common release liner, is then formed into a collated and nested array. In accordance with a second embodiment of the apparatus, a plurality of pre-formed temporary raised pavement markers (TRPMs), having adhesive patches already disposed thereon, are serially deposited and adhered onto a single, common release liner, and subsequently, the assembly, comprising the plurality of temporary raised pavement markers (TRPMs) and the common release sheet or release liner, are formed into a collated and nested array.