Nebraska data collection.

PDFTech ReportSPR-P1(15)MPMC0526-1121-4022-001Automatic data collection systemsData qualityPavement management systemsPavement performancePavement distressRegression analysisCondition surveysEvaluationNebraskaNebraska Transportation CenterRami, Keyvan ZareKim, Yong-RakUniversity of Nebraska--Lincoln. Dept. of Civil EngineeringUnited States. Federal Highway AdministrationNebraska. Dept. of RoadsUnited States. Federal Transit AdministrationUS Transportation CollectionAutomated pavement performance data collection is a method that uses advanced technology to collect detailed road surfacedistress information at traffic speed. Agencies are driven to use automated survey techniques to enhance or replace theircurrent manual distress survey because of the advantages of objective measurements, safety benefits, and reducedmeasurement time. As agencies move toward the transition to fully automated data collection methods, there are commonconcerns regarding how the output of the new method will match the current manual survey ratings and how they will beadopted into the existing Pavement Management System (PMS). This study evaluates the newly implemented automateddistress survey technique and its implementation into the Nebraska Pavement Management System (NPMS). To meet theobjectives, a user-friendly program was developed to convert the automated distress ratings into the current manual distressratings format. Then, a data set that includes more than 7,000 miles of distress data collected by the automated method wasconverted to the manual data format and compared to the most recent manual rating data of those sections to assess theagreement between the two data formats after the conversion process. The results show that the automated pavement surveyslightly overrates bituminous pavement distresses with only a few distress types that could not be properly detected. Finally,a regression analysis of a core pavement performance indicator, NSI, was conducted to examine how the new automatedperformance measurement system will ultimately affect NPMS decisions if implemented into Nebraska\ue2\u20ac\u2122s pavementmanagement system