The District Department of Transportation (DDOT) conducts pavement condition assessments to determine the physical health of its roadway network and to identify the need for improvements such as maintenance, resurfacing, rehabilitation and reconstruction. There are several types of pavement condition indices that are used by highway agencies to assess the improvement needs, two of which are the International Roughness Index (IRI) and Pavement Condition Index (PCI). IRI is typically determined by using specialized equipment for measuring variations in pavement surfaces that serve as input into established computer algorithms. Meanwhile, PCI is based on subjective rating of observed pavement conditions. Both pavement indices are very important since they collectively provide a comprehensive indication of the structural and functional condition of pavements. DDOT collects IRI and PCI data for the Federal roadway system on an annual basis and on the local system every other year. IRI is the only index required as part of the Highway Performance Monitoring System (HPMS) reporting to the Federal Highway Administration. In addition to IRI, DDOT uses PCI as an input into the agency's asset management and programming decision-making process, especially for local roads.


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    Titel :

    Predicting Pavement Condition Index Using International Roughness Index in Washington, DC. Final Report


    Beteiligte:
    S. A. Arhin (Autor:in) / E. C. Noel (Autor:in)

    Erscheinungsdatum :

    2014


    Format / Umfang :

    61 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch