Asymmetric optimal-velocity car-following model

Xihua Xu, John Pang and Christopher Monterola

Physica A: Statistical Mechanics and its Applications, 2015, vol. 436, issue C, 565-571

Abstract: Taking the asymmetric characteristic of the velocity differences of vehicles into account, we present an asymmetric optimal velocity model for a car-following theory. The asymmetry between the acceleration and the deceleration is represented by the exponential function with an asymmetrical factor, which agrees with the published experiment. This model avoids the disadvantage of the unrealistically high acceleration appearing in previous models when the velocity difference becomes large. This model is simple and only has two independent parameters. The linear stability condition is derived and the phase transition of the traffic flow appears beyond the critical density. The strength of interaction between clusters is shown to increase with the asymmetry factor in our model.

Keywords: Traffic flow; Car-following traffic model; Optimal-velocity model (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:436:y:2015:i:c:p:565-571

DOI: 10.1016/j.physa.2015.04.023

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