MEASUREMENT OF RECURRING VERSUS NON-RECURRING CONGESTION: TECHNICAL REPORT

This report documents the technical results of a Washington State Department of Transportation sponsored research effort to determine the nature and cause of congestion on Seattle-area freeways based on an analysis of available databases of traffic incidents and freeway performance. The focus of this effort was to develop a methodology for estimating freeway congestion as a function of its estimated cause (principally, its recurring or non-recurring nature) by using readily available data, as well as to develop, implement, and use a prototype tool set that would apply that methodology. The resulting methodology and tool set produce estimates of congestion (delay) associated with recurring and non-recurring conditions as a function of various user-specified parameters and assumptions. The method is able to analyze Seattle area corridors using data from existing databases. The process makes extensive use of the TRAC-FLOW analysis process, as well as supplementary prototype tools.

• Record URL:
  http://depts.washington.edu/trac/bulkdisk/pdf/568.1.pdf
• Record URL:
  http://www.wsdot.wa.gov/research/reports/fullreports/568.1.pdf
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/38803
• Corporate Authors:

  Washington State Transportation Center

  University of Washington, 1107 NE 45th Street, Suite 535
  Seattle, WA  United States  98105

  Washington State Department of Transportation

  Transportation Building, 310 Maple Park Avenue SE, P.O. Box 47300
  Olympia, WA  United States  98504-7300

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Ishimaru, J
  • Nee, J
  • Hallenbeck, M E
• Publication Date: 2003-10

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Tables;
• Pagination: 36 p.

Subject/Index Terms

• TRT Terms: Databases; Estimating; Freeway operations; Freeways; Methodology; Nonrecurrent congestion; Traffic congestion; Traffic delays; Traffic incidents
• Geographic Terms: Seattle (Washington)
• Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 00968586
• Record Type: Publication
• Report/Paper Numbers: WA-RD 568.1,, Technical Report
• Contract Numbers: Agreement T2695, Task 36
• Files: NTL, TRIS, USDOT, STATEDOT
• Created Date: Jan 30 2004 12:00AM