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Title: CALIBRATING AND VALIDATING TRAFFIC SIMULATION MODELS FOR UNCONVENTIONAL ARTERIAL INTERSECTION DESIGNS
Accession Number: 00715007
Record Type: Component
Availability: Find a library where document is available Abstract: Computer simulation has become an important tool for evaluating transportation strategies quickly and efficiently. Simulation is especially critical in assessing the potential of innovative traffic control alternatives. The calibration and validation of simulation models characterized by unconventional design and operation strategies is presented. This effort was part of a project to investigate unconventional traffic control alternatives for the North Carolina Department of Transportation. Three alternatives were selected for in-depth investigation: the Florida continuous green T-intersection, an application of the modern roundabout, and the Michigan median U-turn intersection. These strategies were examined using Traf-Netsim 4.0 and the macroscopic analysis package SIDRA 4.07. Models for each of the three alternatives were developed and efforts were made to calibrate and, in two cases, validate them with field data collected in Florida, Maryland, and Michigan. The highlights of the calibration included (a) updated critical gap distributions for the six-lane median U-turn and the roundabout, (b) a larger saturation flow rate for the median U-turn, (c) an average roundabout speed, and (d) a distribution of traffic into the free flow lane(s) for the continuous green T-intersection. The validation effort showed that the Traf-Netsim and SIDRA results compared reasonably well to field measurements.
Supplemental Notes: This paper appears in Transportation Research Record No. 1500, Geometric Design, Roadside Safety Features, Roadside Hardware Monitoring, and Scenic Loop Tours. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Geometric design, roadside safety features, roadside hardware monitoring, and scenic loop tours Monograph Accession #: 01399820
Language: English
Authors: Boone, Jonathan LHummer, Joseph EPagination: p. 184-192
Publication Date: 1995
Serial: Features: Figures
(10)
; References
(7)
; Tables
(3)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Design; Highways; Operations and Traffic Management; Planning and Forecasting; I20: Design and Planning of Transport Infrastructure; I72: Traffic and Transport Planning
Files: TRIS, TRB
Created Date: Dec 26 1995 12:00AM
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