GENERALIZED OPTIMAL VELOCITY MODEL FOR TRAFFIC FLOW

Shiro Sawada ()
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Shiro Sawada: Department of Telecommunications, Takuma National College of Technology, Mitoyo, Kagawa 769-1192, Japan

International Journal of Modern Physics C (IJMPC), 2002, vol. 13, issue 01, 1-12

Abstract: A generalized optimal velocity model is analyzed, where the optimal velocity function depends not only on the headway of each car but also the headway of the immediately preceding one. The stability condition of the model is derived by considering a small perturbation around the homogeneous flow solution. The effect of the generalized optimal velocity function is also confirmed with numerical simulations, by examining the hysteresis loop in the headway-velocity phase space, and the relation between the flow and density of cars. In the model with a specific parameter choice, it is found that an intermediate state appears for the movement of cars, where the car keeps a certain velocity whether the headway is short or long. This phenomenon is different from the ordinary stop-and-go state.

Keywords: Traffic flow; optimal velocity model; numerical simulation; hysteresis loop; fundamental diagram (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1142/S0129183102002894

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