United States Department of Transportation
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Traffic flow simulation for an urban freeway corridor
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1998-01-01
[PDF-119.88 KB]
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Alternative Title:Traffic flow simulation for an urban freeway corridor : in Crossroads 2000 Proceedings
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Abstract:The objective of this paper is to develop a realistic and operational macroscopic traffic flow simulation model which requires relatively less data collection efforts. Such a model should be capable of delineating the dynamics of traffic flow created by the merging and diverging activities and complex geometric conditions. In addition, it should have the capability of describing shock wave phenomena and movements along the freeway corridor. A modification of the existing equilibrium speed-density function was made. The modified equilibrium speed-density model provided a greater degree of accuracy in describing the nonlinear speed-density relationship. A modified macroscopic traffic flow simulation model was developed in conjunction with the modified speed-density model. The resulting simulation model showed considerable success in simulating actual freeway conditions, and more importantly, provided accurate solutions of ramp metering requirements for the study section.
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