- 期刊
General Guidelines to Highway Agencies to Enhance their Local Pavement Rating Systems: A Case Study of Nevada's Pavement Rating System
並列摘要
Evaluation of pavement condition is the principle source for the effective management of the pavements within any network or state. Many highway agencies within United State are using different pavement rating systems to evaluate their pavement condition. The data collection system, measurement units, calculation techniques have been modified and updated by several states with technological development with time. Recently, several highway agencies are willing to update their old pavement rating systems or gradually switch to more accurate rating systems but facing difficulties. This paper focuses on the potential enhancement on the Pavement Rating Index (PRI) used by Nevada Department of Transportation (NDOT) and thus eventually transitioning to the Pavement Condition Index (PCI) developed by U.S. Army Construction Engineering Research Laboratory. Pavement condition data that were utilized to calculate PRI over the last 15 years were converted into PCI compatible format using a suitable conversion technique. Estimated PCI values were plotted against its corresponding PRI showed moderate correlation with R^2 value of 0.57. The current PRI system was then enhanced to eliminate the observed deficiencies in the current system. The statistical relationship between the enhanced PRI against PCI showed improved correlation with R^2 value of 0.78. The study concluded that a successful switch from PRI system to PCI system can be achieved in Nevada while maintaining the use of the historical pavement condition data. This paper provides general recommendations for other agencies that are transitioning from local pavement rating system to PCI system.
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