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Title: CALIBRATION AND VALIDATION OF MICROSCOPIC TRAFFIC SIMULATION TOOLS: STOCKHOLM CASE STUDY
Accession Number: 00965470
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: The calibration and validation approach and results from a case study applying the microscopic traffic simulation tool MITSIMLab to a mixed urban-freeway network in the Brunnsviken area in the north of Stockholm, Sweden, under congested traffic conditions are described. Two important components of the simulator were calibrated: driving behavior models and travel behavior components, including origin-destination flows and the route choice model. In the absence of detailed data, only aggregate data (i.e., speed and flow measurements at sensor locations) were available for calibration. Aggregate calibration uses simulation output, which is a result of the interaction among all components of the simulator. Therefore, it is, in general, impossible to identify the effect of individual models on traffic flow when using aggregate data. The calibration approach used takes these interactions into account by iteratively calibrating the different components to minimize the deviation between observed and simulated measurements. The calibrated MITSIMLab model was validated by comparing observed and simulated measurements: traffic flows at sensor locations, point-to-point travel times, and queue lengths. A second set of measurements, taken a year after the ones used for calibration, was used at this stage. Results of the validation are presented. Practical difficulties and limitations that may arise with application of the calibration and validation approach are discussed.
Supplemental Notes: This paper appears in Transportation Research Record No. 1831, Travel Demand and Land Use 2003.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Toledo, TKoutsopoulos, Harilaos NDavol, ABen-Akiva, M EBurghout, WANDREASSON, IJOHANSSON, TLUNDIN, CPagination: p. 65-75
Publication Date: 2003
Serial: ISBN: 0309085659
Features: Figures
(9)
; References
(18)
TRT Terms: Uncontrolled Terms: Geographic Terms: Subject Areas: Highways; Planning and Forecasting; I72: Traffic and Transport Planning
Files: TRIS, TRB, ATRI
Created Date: Nov 10 2003 12:00AM
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