United States Department of Transportation
i
Development of index based pavement performance models for pavement management system (PMS) of LADOTD : tech summary.
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2009-03-01
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Abstract:A research study was initiated by the Louisiana Department of Transportation and Development (LADOTD) in conjunction with the
Federal Highway Administration (FHWA) to evaluate the overall performance and eff ectiveness of LADOTD’s Pavement Management
System (PMS). The study was divided into two phases. The fi rst phase focused on the assessment of the state-of-the-practice of
LADOTD’s PMS regarding accessibility, PMS reports, reference location systems, and distress indices. Part of the assessment was
conducted through the analysis of the responses of all district engineers to specially designed survey questionnaires and personnel
interviews. The details of fi rst phase of the study can be found in the LTRC Report No. 430. This report (LTRC Report No. 460) focuses
on the second phase of the study, which includes a review and update of both pavement performance and treatment models. During
the second phase, a comprehensive evaluation and analysis of the pavement performance and treatment models were conducted
using LADOTD pavement distress data and historical data. Statistical analyses were used to generate the model for pavement
condition prediction and treatment performance evaluation. It should be noted that most existing LADOTD pavement performance
models were developed using the initial few years of distress data, which tends to either underpredict or overpredict the pavement
condition. Pavement performance models based on the available 10 years were developed to
enhance the predicting capabilities of LADOTD’s PMS section.
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