Research Article
Nov 1973
Freeway Traffic Control and Surveillance Model
Publication: Transportation Engineering Journal of ASCE
Volume 99, Issue 4
Abstract
The development of on ramp metering control strategies for a freeway can be aided by the well-developed theory of linear optimal control. The recently developed aggregate variable model appears to be best suited for this purpose. In this model the freeway is partitioned into lengths of about 1/2 mile and traffic is described in terms of the aggregate variables section speed, section density, and volume. This model and linear optimal control theory are used to develop an on ramp metering strategy which is designed to maintain freeway conditions near nominal conditions in the presence of disturbances. An illustrative design for a segment of the San Diego freeway in Los Angeles is provided. The companion problem of processing freeway sensor data to provide current estimates of the aggregate variables can be approached through standard techniques in estimation theory. Methods of attacking this portion of the freeway surveillance problem are presented.
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Published In
Transportation Engineering Journal of ASCE
Volume 99 • Issue 4 • November 1973
Pages: 767 - 783
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: Nov 1973
Published online: Feb 5, 2021
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Authors
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Harold J. Payne
Asst. Prof., Dept. of Electrical Engrg., Univ. of Southern California, Los Angeles, Calif.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.