PERMITTED LEFT-TURN CAPACITY OF EXCLUSIVE LANES: SIMULATION-BASED EMPIRICAL METHOD
An exploratory procedure for analyzing the permitted left-turn capacity with exclusive lanes is presented, including several empirical models for opposing queue length prediction, permitted saturation flow of mixed traffic, and effect of bay length on the left-turn capacity. Some critical factors, such as the number of opposing lanes and the interactions between upstream and downstream green time-cycle length ratios, have been incorporated in the proposed procedures for capacity estimation. A discrete choice modeling methodology has been applied to predict the fraction of time in a cycle during which the through queue length may be over a certain distance. Such a model enables traffic engineers to determine the left-turn bay length from a cost-benefit perspective. It should be noted that all proposed empirical models are grounded on the simulation experiments with TRAF-NETSIM. Hence, adjustments or modifications may be necessary after extensive field observations are conducted to calibrate TRAF-NETSIM.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309061008
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1457, Part 2, Traffic Flow and Capacity. 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
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Authors:
- Chang, Gang-Len
- Zhuang, Leimin
- Perez, Cesar
- Publication Date: 1994
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 96-103
- Monograph Title: Part 1: 1994 TRB Distinguished Lecture, Adolf D May; Part 2: Traffic flow and capacity
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Serial:
- Transportation Research Record
- Issue Number: 1457
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Benefit cost analysis; Choice models; Empirical methods; Green interval (Traffic signal cycle); Left turn lanes; Queuing; Traffic signal cycle
- Uncontrolled Terms: Discrete choice models; Queue length
- Old TRIS Terms: Left turn bay length; Left turn capacity; Opposing traffic lanes
- Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;
Filing Info
- Accession Number: 00677651
- Record Type: Publication
- ISBN: 0309061008
- Files: TRIS, TRB
- Created Date: May 11 1995 12:00AM