SIMPLEX BASED CALIBRATION OF TRAFFIC MICRO-SIMULATION MODELS USING ITS DATA

In recent years micro-simulation has become increasingly important in transportation system modeling. A potential issue is whether these models adequately represent reality and whether enough data exists with which to calibrate these models. Fortunately, over the last ten years there has been a rapid deployment of ITS technologies in most urban areas of North America. While the ITS are developed primarily for real-time traffic operations, the data are typically archived and available for traffic micro-simulation calibration. This paper presents a methodology, which uses ITS data to calibrate microsimulation models and is based on the sequential simplex algorithm. The test bed is a 23 kilometer section of Interstate 10 in Houston, Texas. Two micro-simulation models (CORSIM and TRANSIMS) were calibrated for two different demand matrices, and three different time periods (AM Peak, PM Peak, and Off-Peak). It was found for the AM Peak that the simplex algorithm had better results then either the default values or a simple, manual calibration. As the level of congestion decreased, the effectiveness of the simplex approach also decreased as compared to standard techniques

• Supplemental Notes:
  • Publication Date: 2003. Transportation Research Board, Washington DC. Remarks: Paper prepared for presentation at the 82nd annual meeting of the Transportation Research Board, Washington, D.C., January 2003. Format: CD ROM
• Corporate Authors:

  University of California, Berkeley

  California PATH Program, Institute of Transportation Studies
  Richmond Field Station, 1357 South 46th Street
  Richmond, CA  United States  94804-4648

  California Department of Transportation

  1120 N Street
  Sacramento, CA  United States  95814

  University of California, Berkeley

  Department of Electrical Engineering and Computer Sciences
  Berkeley, CA  United States  94720
• Authors:
  • Kim, Kyu-Ok
  • Rilett, L R
• Conference:
  • Transportation Research Board 82nd Annual Meeting
  • Location: Washington DC, United States
  • Date: 2003-1-12 to 2003-1-16
• Date: 2003

Language

• English

Media Info

• Pagination: 24 p.

Subject/Index Terms

• TRT Terms: Computer algorithms; Databases; Simulation; Traffic flow
• Subject Areas: Operations and Traffic Management;

Filing Info

• Accession Number: 00962492
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: PATH, STATEDOT
• Created Date: Sep 2 2003 12:00AM