Analysis of traffic flow based on car-following theory: a cyber-physical perspective

The car-following models are investigated from a new point of cyber-physical systems in this paper. Comparing with the traditional researches which only focus on cyber aspect of the driving process, we further study the driving process with the consideration of vehicle dynamics which is physical aspect of the driving process. Detailedly, both the inertia coefficient and time-delay coefficient of the vehicle are introduced into three typical car-following models. By analysis, the stability conditions of the typical car-following models are obtained by using control theory and the theoretical results are also demonstrated through computer simulation. All the results reveal that vehicle dynamics has strong effect on traffic dynamics and the stability of traffic flow.

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