Expert System for Traffic Signal Setting Assistance
Publication: Journal of Transportation Engineering
Volume 113, Issue 2
Abstract
An experimental knowledge‐based expert system to assist in traffic signal setting for isolated intersections is presented. In contrast to existing computer aids, the system can be applied to intersections of highly irregular geometries. Algorithmic processes to evaluate signal settings and decision tables to identify traffic flow conflicts are invoked by the expert system; phase distribution of flows is performed by applying heuristic rules. The system was written in the OPS5 expert system environment. Advantages and disadvantages of the expert system programming approach relative to conventional algorithmic processes in the traffic engineering domain are described.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Brownston, L., Farrell, R., Kant, E., and Martin N., Programming Expert Systems in OPS5: An Introduction to Rule‐Based Programming, Addison‐Wesley, Publishing Co. Inc., Reading, Mass., 1985.
2.
Fenves, S. J., “Representation of the Computer‐Aided Design Process by a Network of Decision Tables,” Computers and Structures 3, 1973.
3.
Forgy, C. L., The OPS5 User's Manual, Technical Report CMU‐CS‐81‐135, Computer Science Department, Carnegie‐Mellon University, Pittsburgh, Pa., 1981.
4.
Garret, J., and Fenves, S., “Decision Table Evaluator, User's Manual,” Technical Report, Carnegie‐Mellon University, Pittsburgh, Pa., 1985.
5.
Hayes‐Roth, F., Waterman, D. A., and Lenat, D. B., Building Expert Systems, Addison‐Wesley, Publishing Co. Inc., Reading, Mass., 1983.
6.
Hendrickson, C., Rehak, D., and Fenves, S., “Expert Systems Applications in Transportation Systems Engineering,” Technical Report, Carnegie‐Mellon Univ., Pittsburgh, Pa., 1985.
7.
Ozanne, T., “Signal Software: Engineering Tool or Black Box?” Microcomputer Applications Within the Urban Transportation Environment, ASCE, 1985, pp. 275–281.
8.
Radwan, E., and Sadegh, A., “Assessment of Software for Traffic Signal Analysis,” Microcomputer Applications Within the Urban Transportation Environment, ASCE, 1985, pp. 371–379.
9.
Strong, D. W., “Improved Urban Traffic Flow Through Signal Re‐Timing—California Experience,” Innovative Strategies to Improve Urban Transportation Performance, Proceedings, ASCE Speciality Conference, 1984, pp. 212–221.
10.
U.S. Department of Transportation, Manual on Uniform Traffic Control Devices for Streets and Highways, Part IV: Signals, Washington, D.C., 1971.
11.
Webster, F. V., Traffic Signal Settings, Technical Report 39, Road Research Laboratory, London, England, 1958.
12.
Wohl, M., and Martin, B., Traffic System Analysis for Engineers and Planners, McGraw‐Hill, Inc., New York, N.Y., 1967.
Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 113 • Issue 2 • March 1987
Pages: 108 - 126
Copyright
Copyright © 1987 ASCE.
History
Published online: Mar 1, 1987
Published in print: Mar 1987
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.