Abstract: Adhesive backed information and border sign symbols are formed from finished metal sheet or coil which has initially applied to a back surface thereof adhesive covered by release paper. Reflectors are mounted in openings of the sign symbols retained therein through symbol opening edge portions preferably partially overlying and preferably partially edge pressure engaging the reflectors, the information symbols such as letters, numbers and arrows having a multiplicity of spaced reflectors, and the border symbols being elongated and also having said spaced reflectors. The sign is assembled by removing the release paper from the symbols and adhesively adhering the symbols to a finished front face of a sign panel, the information symbols being positioned inwardly of a sign panel border portion and the border symbols being positioned at the sign panel border portion circumscribing the information symbols.

Abstract: The marker panel is preferably formed internally of force crushable material and has side and rearward surfaces thereof conforming to surfaces of the U-shaped recess of a conventional metal guardrail so that the marker panel may be preferably adhesively secured fully within the guardrail recess. An exposed generally vertical front surface of the marker panel is preferably covered with a plastic film, sometimes reflectorized, and a reflector or reflectors may, in certain instances, be mounted angularly in this front surface or on angular ends of the marker panel so as to be exposed outwardly of the guardrail recess.