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Update of Traffic Factor Equations for IDOT Mechanistic-Empirical Pavement Design

Transportation agencies must adapt pavement design procedures to meet changes in traffic and advances in new technologies such as electric vehicles and trucks, which are expected to accelerate pavement damage due to increased weight from batteries. Researchers will update the equations used by IDOT pavement designers to convert mixed-traffic axle loadings into traffic factors for asphalt and concrete pavements while accounting for current traffic conditions and axle configurations. Traffic factor represents the total number of 18-kip equivalent single-axle loads, expressed in millions, that a given pavement may be expected to carry. They will also incorporate the impact of e-trucks and platoons — a group or convoy of closely spaced vehicles — on pavement design. Updating the traffic factor equations to meet current and future demands will allow the agency to properly design pavements to carry the anticipated loadings.

    Language

    • English

    Project

    • Status: Active
    • Funding: $488,510.00
    • Contract Numbers:

      R27-277

    • Sponsor Organizations:

      Illinois Department of Transportation

      Bureau of Materials and Physical Research
      126 East Ash Street
      Springfield, IL  United States  62704-4766
    • Managing Organizations:

      University of Illinois, Urbana-Champaign

      Illinois Center for Transportation
      1611 Titan Drive
      Rantoul, IL  United States  61866
    • Principal Investigators:

      Al-Qadi, Imad

    • Start Date: 20250101
    • Expected Completion Date: 20270630
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01941770
    • Record Type: Research project
    • Source Agency: Illinois Department of Transportation
    • Contract Numbers: R27-277
    • Files: RIP, STATEDOT
    • Created Date: Jan 6 2025 12:32PM