00983255

Component

https://doi.org/10.3141/1876-08

http://scholar.google.com...witz&publication_year=2004

A procedure for constructing and calibrating a detailed model of a freeway by using VISSIM is presented and applied to a 15-mi stretch of I-210 West in Pasadena, California. This test site provides several challenges for microscopic modeling: a high-occupancy vehicle (HOV) lane with an intermittent barrier, a heavy freeway connector, 20 metered on-ramps with and without HOV bypass lanes, and three interacting bottlenecks. Field data used as input to the model were compiled from two separate sources: loop detectors on the on-ramps and main line (PeMS) and a manual survey of on-ramps and off-ramps. Gaps in both sources made it necessary to use a composite data set, constructed from several typical days. FREQ was used as an intermediate tool to generate a set of origin destination matrices from the assembled boundary flows. The model construction procedure consists of (1) identification of important geometric features, (2) collection and processing of traffic data, (3) analysis of the main-line data to identify recurring bottlenecks, (4) VISSIM coding, and (5) calibration based on observations from Step 3. A qualitative set of goals was established for the calibration. These were met with relatively few modifications to VISSIM's driver behavior parameters.

This paper appears in Transportation Research Record No. 1876, Calibration and Validation of Simulation Models 2004.

00983247

English

p. 71-81

2004

Transportation Research Record

0309094704

Figures (6) ; References (10) ; Tables (2)

Bottlenecks; Calibration; Data analysis; Freeways; Geometric design; High occupancy vehicle lanes; Loop detectors; Manual traffic counts; Matrices (Mathematics); Microsimulation; Off ramps; On ramps; Origin and destination; Ramp metering; Traffic congestion; Traffic data

VISSIM (Computer model)

Field data

Pasadena (California)

Highways; Operations and Traffic Management; I71: Traffic Theory

TRIS, TRB, ATRI

Dec 9 2004 12:00AM

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