A Design and Synthesis of a Multilevel Freeway Control System and a Study of Its Associated Operational Control Plan PDF Download
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Author: Carroll Joe Messer Publisher: ISBN: Category : Electronic traffic controls Languages : en Pages : 376
Book Description
This dissertation considers the mathematical modeling and implementation of a multilevel freeway control system together with a consideration of some operational alternatives and associated consequences of real-time freeway control. The control functions of the freeway control system were considered to be different levels of a multilevel control system. The various levels in the multilevel format were (1) the entrance ramp signal regulating function, (2) the ramp merging control optimizing function, (3) the ramp merging control adaptive function, (4) the freeway system optimizing function, (5) the freeway system adaptive function, and (6) the self-organizing function. The individual control functions that existed at each level were studied; and new ones were developed or modifications made to previous ones as required to effect a more efficient control system. The necessary transfer or linkage functions between levels of control were also modeled. ...
Author: Carroll Joe Messer Publisher: ISBN: Category : Electronic traffic controls Languages : en Pages : 376
Book Description
This dissertation considers the mathematical modeling and implementation of a multilevel freeway control system together with a consideration of some operational alternatives and associated consequences of real-time freeway control. The control functions of the freeway control system were considered to be different levels of a multilevel control system. The various levels in the multilevel format were (1) the entrance ramp signal regulating function, (2) the ramp merging control optimizing function, (3) the ramp merging control adaptive function, (4) the freeway system optimizing function, (5) the freeway system adaptive function, and (6) the self-organizing function. The individual control functions that existed at each level were studied; and new ones were developed or modifications made to previous ones as required to effect a more efficient control system. The necessary transfer or linkage functions between levels of control were also modeled. ...
Author: Carroll J. Messer Publisher: ISBN: Category : Electronic traffic controls Languages : en Pages : 114
Book Description
Freeway ramp metering systems have been used to improve urban freeway flow. However, control strategies must be properly adjusted to account for ramp queues overflowing onto surface streets and provide equitable on-ramp control during various operating periods. An improved solution can be obtained by optimizing this problem simultaneously for a group of time slices. This study identifies and examines a microcomputer-based optimization scheme that can assist in developing efficient freeway control strategies for on-line freeway surveillance and control. A multi-level freeway control structure is employed for which ramp metering control algorithms are developed for each level of control. Flow-based and lane occupancy-based system algorithms are presented. Detailed data file requirements are provided for each control level. A microcomputer prototype, or laboratory test version of the system level, will be described in a companion project report.
Author: Carroll Joe Messer
Author: Carroll Joe Messer
Author: Institute of Transportation and Traffic Engineering
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Author: Carroll J. Messer
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Author: Jin-Jerg Wang
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Author: Khosrow Ovaici
Author: Institute of Transportation Engineers. Meeting
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