ESTIMATING CUMULATIVE TRAFFIC LOADS, VOLUME II: TRAFFIC DATA ASSESSMENT AND AXLE LOAD PROJECTION FOR THE SITES WITH ACCEPTABLE AXLE WEIGHT DATA, FINAL REPORT FOR PHASE 2

In 1998, the Federal Highway Administration sponsored a study to estimate traffic loads on Long-Term Pavement Performance (LTPP) sites. This report contains findings of the second phase of the study. Phase 1 encompassed the development of the estimation methodology, including numerical examples, and was documented in report FHWA-RD-00-054 issued in July 2000. Phase 2, described in this report, included the assessment of the overall quality of traffic data for all 890 LTPP traffic sites, and the projection of axle loads for all LTPP sites with adequate traffic data. Phase 2 also included the distribution of comprehensive traffic data reports to all participating agencies and the incorporation of comments regarding traffic projections received from the agencies. Axle load projections were developed for all in-service years up to 1998 for 558 LTPP traffic sites that had adequate traffic monitoring data in the Information Management System (IMS) database. The axle load projections were expressed as annual axle load spectra for single, tandem, and triple axles, and were placed into IMS computed parameter tables. The projection results for all LTPP sites are summarized in Appendix A. To overcome the difficulty of estimating traffic loads for the remaining 332 LTPP sites, it was proposed to develop the LTPP Pavement Loading Guide (PLG). The report contains a description of the purpose, design parameters, and functionality of the PLG, a blueprint for the development of the PLG, and two examples of using the PLG to obtain traffic load projections for LTPP sites without site-specific truck class and/or axle load data. The recommended traffic analysis activities include the development of the LTPP PLG, completing traffic load projections for all LTPP sites, and the development of a comprehensive action plan for better utilization of the existing traffic data. The recommended components of the action plan include a comprehensive quality assurance process, use of monthly traffic data for estimating traffic loads, and regional traffic modeling utilizing both LTPP traffic data and other traffic data.

• Record URL:
  • http://www.fhwa.dot.gov/pavement/ltpp/03094/
• Record URL:
  • https://www.fhwa.dot.gov/publications/research/infrastructure/pavements/ltpp/03094/03094.pdf
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/40750
• Corporate Authors:

  ERES Consultants, Incorporated

  9030 Red Branch Road, Suite 210
  Columbia, MD  United States  21045

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Hajek, J J
  • Selezneva, O J
  • Mladenovic, G
  • Jiang, Y J
• Publication Date: 2005-3

Language

• English

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: 133 p.

Subject/Index Terms

• TRT Terms: Axle load force; Data quality; Estimating; Forecasting; Quality assurance; Traffic data; Traffic loads; Traffic models
• Identifier Terms: Long-Term Pavement Performance Program
• Subject Areas: Design; Freight Transportation; Highways; Operations and Traffic Management; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00989266
• Record Type: Publication
• Report/Paper Numbers: FHWA-RD-03-094,, Final Report
• Contract Numbers: DTFH61-96-C-00003
• Files: NTL, TRIS, USDOT
• Created Date: Apr 20 2005 12:00AM