Analyzing and Quantifying the Impact of Congestion on LTL Industry Costs and Performance in the Portland Metropolitan Region

Increased congestion during peak morning and afternoon periods in urban areas is increasing logistics costs. In addition, environmental, social, and political pressures to limit the impacts associated with CO2 emissions are mounting rapidly. A key challenge for transportation agencies and businesses is to improve the efficiency of urban freight and commercial vehicle movements while ensuring environmental quality, livable communities, and economic growth. However, research and policy efforts to analyze and quantify the impacts of congestion and freight public policies on carriers' operations and CO2 emissions are hindered by the complexities of vehicle routing problems with time-dependent travel times and the lack of network-wide congestion data. This research focuses on the analysis of costs and CO2 emissions for different levels of congestion and time-definitive customer demands. Travel time data from an extensive archive of freeway sensors, time-dependent vehicle routing algorithms, and problems-instances with different types of binding constraints are used to analyze the impacts of congestion on commercial vehicle emissions.

• Record URL:
  http://ppms.trec.pdx.edu/media/project_files/OTREC-RR-12-10_Final.pdf
• 
• Summary URL:
  http://nitc.trec.pdx.edu/research/project/276
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/24702
• Supplemental Notes:
  • This research was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
• Corporate Authors:

  Portland State University

  Department of Civil and Environmental Engineering
  P.O. Box 751
  Portland, OR  United States  97207

  Oregon Transportation Research and Education Consortium

  P.O. Box 751
  301A Engineering Building
  Portland, OR  United States  97207

  Research and Innovative Technology Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Figliozzi, Miguel
• Publication Date: 2012-7

Language

• English

Media Info

• Media Type: Web
• Edition: Final Report
• Features: Appendices; Figures; Maps; References; Tables;
• Pagination: 70p

Subject/Index Terms

• TRT Terms: Carbon dioxide; Commercial vehicle operations; Costs; Less than truckload traffic; Logistics; Peak hour traffic; Routing; Time dependence; Traffic congestion; Travel time; Urban areas
• Geographic Terms: Portland Metropolitan Area (Oregon)
• Subject Areas: Environment; Freight Transportation; Operations and Traffic Management; I15: Environment; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01379861
• Record Type: Publication
• Report/Paper Numbers: OTREC-RR-12-10
• Contract Numbers: 2009-276
• Files: UTC, NTL, TRIS, USDOT
• Created Date: Aug 7 2012 4:10PM