Research on Traffic Sign Retroreflective Sheeting Performance: A Synthesis of Practice Status: CompleteReport Date: 06/02/2021 Summary: The studies of sign luminance and fluorescence will provide data that should optimize the selection of signing materials to best fit the conditions of the location where a sign is installed. This will help MnDOT to best meet the needs of the driving population in a cost-effective manner. Final Deliverables: Synthesis #TRS2101 Related Materials: Related Research: