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Interim Program Documentation on System Ramp Control Optimization Algorithms
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1994-05-01
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[PDF-2.62 MB]
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Edition:Interim: September 1991 - August 1992
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Abstract:Freeway ramp metering systems have been used to improve urban freeway flow. However, control strategies must be properly adjusted to account for ramp queue overflow onto surface streets and to provide equitable on-ramp control during various operating periods. An improved. solution can be obtained by optimizing this problem simultaneously for an extended control period (a group of time slices). This study identifies and examines a microcomputer-based optimization scheme that will assist engineers in developing efficient freeway control strategies to enhance the real-time freeway surveillance and control. This programmer's manual basically describes the software design aspects of the proposed freeway ramp metering system. The report documents the various programming issues of the component modules, including the main program, input data processor, graphics user interface, and the optional output interface program using Quattro Pro system.
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