Use of Pavement Marking Degradation Models to Develop a Pavement Marking Management System

Retroreflectivity of longitudinal pavement markings degrades over time. Over a one-year period in 2007-2008, the Pennsylvania Department of Transportation collected periodic pavement marking retroreflectivity data on 88 roadway segments to develop a series of pavement marking degradation models that could be used to implement a management system. In this study, panel data models incorporating the repeated retroreflectivity measurements recorded over time were used to estimate the service life of both waterborne and epoxy pavement markings. Findings show that pavement marking retroreflectivity decreases as the age of both epoxy and waterborne-paint pavement markings increase. White pavement markings were shown to have higher estimated service lives than yellow pavement markings. Traffic exposure was found to be negatively correlated with pavement marking retroreflectivity in the waterborne-paint analysis, but traffic exposure was not statistically significant in the epoxy pavement marking retroreflectivity model. A life cycle cost analysis showed that waterborne paints are more cost-effective than epoxy pavement markings if applied on a statewide basis. Although the current study focused on models estimated using data collecting at a statewide level, statistical models based on more local levels may better predict pavement markings service life and should be a focus of future research.


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01147985
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 17 2010 2:18PM