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
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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
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Corporate Authors:
University of California, Berkeley
California PATH Program, Institute of Transportation Studies
Richmond Field Station, 1357 South 46th Street
Richmond, CA United States 94804-4648California Department of Transportation
1120 N Street
Sacramento, CA United States 95814University of California, Berkeley
Department of Electrical Engineering and Computer Sciences
Berkeley, CA United States 94720 -
Authors:
- Kim, Kyu-Ok
- Rilett, L R
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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