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- W203806893 abstract "The New Mexico Department of Transportation (NMDOT) has a program to collect distress data through visual surveys and uses this information at the network level, together with roughness and rutting data, to calculate its pavement serviceability index. The main goal of this research study was two-fold: revise and improve the current distress evaluation protocol with the purpose of increasing the objectivity and accuracy of the distress data and methods, and develop simple procedures to estimate distress data required for Highway Performance Monitoring System (HPMS) reporting and for NMDOT’s Pavement Management System (PMS). A revised protocol for visual distress surveys in flexible pavements was proposed. The variability and practicality of the proposed protocol was tested in 66 sample sections and two rounds of surveys with very good results. The interrater agreements of the current and proposed protocols were evaluated applying the Average Deviation Index method. Even though the interrater agreement was different among the distress types, the proposed protocol showed good levels of agreement for all distresses, both for severity and extent. It is recommended that the distress evaluations of rigid sections rate the same distress type but include ratings of all severity levels. Field tests consisting of detailed measurements of transverse cracks, longitudinal cracks and alligator cracking were done in 15 sample sections to determine procedures to estimate distress parameters for HPMS and PMS from raters’ data of visual surveys. The Pavement Serviceability Index (PSI) was revised to accommodate the changes introduced by the proposed protocol. This report includes an implementation plan for the recommended approaches. Also included is a summary of the project goals, overview of the work performed, proposed protocol and recommendations in the format of a presentation for dissemination purposes." @default.
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- W203806893 date "2012-01-01" @default.
- W203806893 modified "2023-09-27" @default.
- W203806893 title "Improving NMDOT's pavement distress survey methodology and developing correlations between FHWA's HPMS distress data and PMS data." @default.
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