Development of New Default Traffic Datasets for the M-E PDG Using the SPS Traffic Data Collection Pooled-Fund Study Data

Many pavement construction projects cannot justify the collection of site-specific weigh-in-motion (WIM) data solely for design purposes. Use of WIM data from other sites or default traffic values is therefore not uncommon. The default traffic datasets for NCHRP Project 1-37A - the Mechanistic-Empirical Pavement Design Guide (M-E PDG) - were based on the Long-Term Pavement Performance (LTPP) traffic data available in 1998. According to the 1999 Interim Report "The Development of the 2002 Guide for the Design of New and Rehabilitated Pavement Structures," the quantity and quality of these data were less than expected. Since that time, the LTPP Traffic Data Collection Pooled-Fund Study, TPF-5(004) has greatly increased the quality and quantity of traffic data available through LTPP. The M-E PDG is sensitive to traffic inputs and the existing default traffic values are inadequate. This project will rectify this situation with the high-quality traffic data now available from LTPP.


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    • Status: Active
    • Contract Numbers:


    • Sponsor Organizations:

      Federal Highway Administration

      1200 New Jersey Avenue, SE
      Washington, DC  United States  20590
    • Project Managers:

      Walker, Deborah

    • Performing Organizations:

      Applied Research Associates, Incorporated

      7184 Troy Hill Drive, Suite N
      Elkridge, Maryland  United States  21075
    • Principal Investigators:

      Selezneva, Olga

    • Start Date: 20090910
    • Expected Completion Date: 0
    • Actual Completion Date: 20110930
    • Source Data: RiP Project 24922

    Subject/Index Terms

    Filing Info

    • Accession Number: 01461714
    • Record Type: Research project
    • Source Agency: Federal Highway Administration
    • Contract Numbers: DTFH61-02-D-00138-T-
    • Files: RiP, USDOT
    • Created Date: Jan 3 2013 1:51PM