Development of New Default Traffic Datasets for the Mechanistic-Empirical Pavement Design Guide Using the SPS Traffic Data Collection Pooled-Fund Study Data
Project Information
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 National Cooperative Highway Research Program (NCHRP) Project 1-37A - the Mechanistic-Empirical Pavement Design Guide (MEPDG) - 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 MEPDG 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.
- DTFH61-02-D-001138 TOPR #0905
- Infrastructure
- FY 2002-2022 / Corporate / Research Infrastructure, Technology Transfer, and Partnerships
- FY 2002-2022 / Infrastructure / Long-Term Infrastructure Performance
- FY 2002-2022 / Infrastructure / Pavements and Materials
- Long-Term Pavement Performance
AMRP = Annual Modal Research Plan