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Dynamics is studiedfor one-dimensional single-lane traffic flow by means of an extended optimal-velocitymodel with continuously varied bottleneck strength for nonlinear roads. Two phasesexist in this model such as free flow and wide moving jam states in the systemshaving relatively small values of the bottleneck strength parameter. Inaddition to the two phases, locally congested phaseappears as the strength becomes prominent. Jam formation occurswith the similar mechanism to the boomerang effect as well as the pinch onein it. Wide scattering of the flow-density relation in fundamental diagram isfound in the congested phase.

KEYWORDS

Optimal-Velocity Model, Phase Transition, Synchronized Flow, Jam Formation Mechanism, Fundamental Diagram

Cite this paper

Watanabe, M. 2014 Traffic Dynamics and Congested Phases Derived from an Extended Optimal-Velocity Model. Engineering, 6, 462-471. doi: 10.4236-eng.2014.68048.





Autor: Makoto Watanabe

Fuente: http://www.scirp.org/



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