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Title: DECISION SUPPORT SYSTEM FOR CONTROLLING TRAFFIC SIGNALS
Accession Number: 00647269
Record Type: Component
Availability: Find a library where document is available Abstract: In many metropolitan areas traffic control is monitored from control centers. The operator of a control center is asked to make a quick decision and to modify the signal programs of the urban signal network in whole or in part. In order to make a proper decision, the operator must consider a wide range of alternatives and evaluate their expected effects on the whole traffic system. The complicated structure of the problem and the routine occurrence of random events demonstrate the complexity of the decision process in traffic control. A procedure will be described that is aimed at supporting this decision making. The procedure is characterized by the systematic scanning of a wide range of alternatives and includes a special algorithm for reducing the size of the problem and concentrating on the most promising strategies. A statistical decision tree is used for spanning all alternatives and expressing the subjective priorities among them and the projection regarding their consequences. An important option given to the controller is the ability to acquire more information to support his decision by using on-line simulations. This option is time consuming and therefore has a cost. The operator is given the tools to decide whether the additional information is worth the price. In addition, the system contains a systematic procedure to "learn" from past experience and to improve its ability to make decisions under uncertainty conditions.
Supplemental Notes: This paper appears in Transportation Research Record No. 1421, Traffic Control Devices, Visibility, and Traffic Signal Systems. 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: Traffic control devices, visibility, and traffic signal systems Monograph Accession #: 01398730
Language: English
Authors: Gal-Tzur, AyeletMahalel, DavidPrashker, Joseph NPagination: p. 69-75
Publication Date: 1993
Serial: ISBN: 0309055741
Features: Figures
(4)
; References
(9)
TRT Terms: Old TRIS Terms: Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control
Files: TRIS, TRB
Created Date: May 2 1994 12:00AM
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