United States Department of Transportation
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Some Considerations on the Problem of Non-Steady State Traffic Flow Optimization
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1973-10-01
[PDF-1.64 MB]
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Edition:Final report: May 1973
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NTL Classification:NTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLSNTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic FlowNTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATION
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Abstract:The report contains the authors initial efforts aimed at extending the steady state freeway model for optimizing freeway traffic flow to a non-steady state model. The steady-state model does not allow reaction to continuously changing conditions which are often important. The non-steady state or dynamic model will allow this and is intended to be used whenever a metering rate which changes with time is needed. The dynamic modeling is accomplished by developing optimization procedures based on the principles of traffic dynamics, specifically, the continuum equations. In this initial effort only a tunnel roadway and a single land freeway (but with exits and ramps) are considered.
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