Understanding Time-of-Day Variation in Truck Transport and General Traffic Emissions: Guidance for Strategic Urban Air Quality Investments

This project plans to improve the assessment of vehicle emissions and air quality impacts based on weekday and weekend speed and volume information, aggregated by freeway and arterial roadway type for each of 101 urban areas represented in the Texas A&M Transportation Institute's (TTI's) Urban Mobility Report (UMR). Volume and speed information (for trucks and mixed-vehicles) will be combined with speed-dependent emission factors, in a manner relevant to current Environmental Protection Agency (EPA) guidance for transportation emissions calculations. As such, methods developed in this study can support broader air quality management planning, as well as advanced applied research on mobile-source air quality impacts.


  • English


  • Status: Completed
  • Funding: $183749.00
  • Contract Numbers:


  • Sponsor Organizations:

    Research and Innovative Technology Administration

    University Transportation Centers Program
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Start Date: 20140801
  • Expected Completion Date: 0
  • Actual Completion Date: 20151031
  • Source Data: RiP Project 38139

Subject/Index Terms

Filing Info

  • Accession Number: 01545031
  • Record Type: Research project
  • Source Agency: National Center for Freight and Infrastructure Research and Education (CFIRE)
  • Contract Numbers: DTRT12-G-UTC19
  • Files: UTC, RIP
  • Created Date: Nov 25 2014 1:00AM