U.S. Department of Transportation
Federal Highway Administration
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Washington, DC 20590
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
|This report is an archived publication and may contain dated technical, contact, and link information|
|Publication Number: FHWA-RD-00-054 Date: July 2000|
Publication Number: FHWA-RD-00-054
Date: July 2000
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Pavement performance analysis encompasses a variety of applications, including the prediction of individual distresses, pavement design and rehabilitation, and pavement management. In all ofthese applications, knowledge ofthe cumulative trafflc loads imposed on the pavement is a crucial element ofthe analysis process, especially in developing load-related distress prediction models. Because ofthe expensive and massive nature of the trafflc data collection process in the field, it has been the responsibility ofthe participating agencies since the inception ofthe Long Term Pavement Performance (LTPP) program. The result has been considerable variation in the quality and quantity of the historical and monitoring traffic data, creating a need to estimate cumulative traffic loads for the entire pavement lifespan using the available fragmented data.
This report provides a methodology for obtaining cumulative traffic load spectra applicable for all LTPP sites, and demonstrates this methodology using 12 case studies. This report will be of interest to engineers involved in pavement design, pavement performance evaluation and prediction, and pavement maintenance and rehabilitation.
T. Paul Teng, Director
Office of Infrastructure, Research and Development
This document is disseminated under the sponsorship of the Department of Transportation in the interest of information exchange. The United States Government assumes no liability for its contents or use thereof. This report does not constitute a standard, specification, or regulation.
The United States Government does not endorse products or manufacturers. Trade and manufacturers' names appear in this report only because they are considered essential to the object of the document.