Date of Award
5-2010
Document Type
Thesis
Degree Name
Master of Science (MS)
Legacy Department
Civil Engineering
Committee Chair/Advisor
Sarasua, Wayne A
Committee Member
Davis , William J
Committee Member
Ogle , Jennifer H
Abstract
This research analyzes waterbased and thermoplastic pavement markings on primary and secondary roads in South Carolina. The primary objective of this research was to develop retroreflectivity degradation models for these two pavement marking materials, as well as determine the expected useful life of the markings. Predicting retroreflectivity and marking life is important so that state DOTs may efficiently replace markings in order to reduce safety hazards as well as maintenance costs.
Data collection for this research lasted 21 months, where retroreflectivity of pavement markings was measured on over 100 primary and secondary roads in South Carolina. Variables such as marking type, date of application, traffic volume, among others were collected during this data collection period. Stepwise regression was performed to determine which variables were significant. Simple and multiple linear regression was completed to develop degradation models. These models were enhanced with the addition of buffer zones, which reduces the frequency of model over-prediction. Final degradation models were then created for waterbased and thermoplastic markings, along with estimated marking lives based on an assumed minimum retroreflectivity. The result of this research is a set of fully-functional models that state DOTs and other governing agencies may use in their pavement marking management systems.
Recommended Citation
Johnson, Joshua, "Long-Term Performance of Pavement Markings on Primary and Secondary Roads" (2010). All Theses. 808.
https://open.clemson.edu/all_theses/808