United States Department of Transportation
i
Pavement marking performance analysis
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2009-06-30
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[PDF-3.49 MB]
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Edition:Final Report; July 2007 to June 2009
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Abstract:This research evaluated pavement marking performance and developed useful degradation models for thermoplastic
and paint pavement markings which can help North Carolina meet the pending FHWA minimum retroreflectivity
requirements. The impacts of several important factors (such as lateral location, directionality, region, and
pavement roughness) on pavement marking retroreflectivity were evaluated. With two large datasets in hand, we
determined whether these factors had significant impacts on marking retroreflectivity. Image processing techniques
were used to analyze pavement marking surface glass bead density. We were able to explain why paint marking
retroreflectivity values degraded over time by evaluating the impact of bead density on paint marking
retroreflectivity. The research reviewed existing marking retroreflectivity degradation models and developed useful
new models for both thermoplastic and paint pavement markings in NC. The research presented a transportation
asset management system framework for estimating the current and future condition of pavement markings. The
research outcomes enable the NCDOT have a better understanding of thermoplastic and paint pavement marking
performance, which can lead to cost saving by maximizing pavement marking service lifecycles.
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