RESEARCH ARTICLE


Synthesis of Unconventional Dynamic Merge Metering Traffic Control for Work Zones



Heng Wei*, 1, Manojkumar Pavithran2, Ping Yi3, Qingyan (Ken) Yang4, Qing-An Zeng5
1 Department of Civil & Environmental Engineering, 792 Rhodes Hall, P.O. Box 210071, University of Cincinnati, Cincinnati, Ohio 45221, USA
2 Y.S. Mantri and Associates LLC, 325 N. Austin Dr. Suite # 2, Chandler, AZ 85226, USA
3 Department of Civil Engineering, ASEC 213, University of Akron, Akron, Ohio 45221, USA
4 Iteris, Inc., 1120 East Long Lake, Suite 222, Troy, Michigan, 48085, USA
5 Department of Computer Science, P.O. Box 210030, University of Cincinnati, Cincinnati, Ohio 45221, USA


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Creative Commons License
© 2010 Weiet al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Civil & Environmental Engineering, 792 Rhodes Hall, P.O. Box 210071, University of Cincinnati, Cincinnati, Ohio 45221, USA; Tel: 513-556-3781; Fax: 513-556-2599; E-mail: weihg@ucmail.uc.edu


Abstract

This paper presents an unconventional approach for work-zone bottleneck traffic control through integrating the dynamic late merge with a merge metering via wireless communication at the downstream taper area of a work zone, termed as Dynamic Merge Metering Traffic Control System (DMM-Tracs). The architecture and communication system for the DMM-Tracs, including system components, communication technologies and operation mechanism, are introduced. With this system, the merge metering control will be activated depending on the volume detected at an upstream location of the work-zone bottleneck. If the thresholds of control parameters are met, a merge metering signal installed at the taper area will be activated and approaching vehicles will be informed of the metering situation through flashing signage or changeable message sign installed in the advance areas of the work zone. To reduce enforced merges and potentials of merge conflicts, the control scheme will be adjusted on the real-time basis depending on the detected traffic conditions. This potentially increases the efficiency with which the traffic is discharged into the open lane inside the work zone. A portable controller is the “brain” of the DMM-Tracs to receive data from detectors, process the data, and control the merge metering signal via wireless communications. The efficacy of the DMM-Tracs is evaluated via a microsimulation test bed with the state-of-the-art microscopic simulation software VISSIM. Meanwhile, the volume threshold values are also determined via the simulation. The simulation results indicate that higher lane-closure percentage of the bottleneck, more applicable the DMM-Tracs.

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