科研之友
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摘要
In developing countries or rural areas where lanes may not be demarcated on a road though some vehicles can travel in parallel, a vehicle would not follow the lane discipline, and move in the middle of the lane without lateral gaps, which indicates that the following vehicle is not only affected by the longitudinal distance from the preceding vehicle but also the lateral distance. In the connected vehicle's environment, based on the feedback of the electronic throttle angle between the current vehicle and the preceding vehicle, the operational state difference of successive vehicles can be acquired in real-time, which improves the following characteristics of the following vehicle. In this study, we present a non-lane-discipline-based modified continuum model accounting for the electronic throttle dynamics via the macro-transformation method. The stability condition of the proposed continuum model is received via the perturbation method in the linear stability analysis section. When the above stable conditions do not hold, the KdV-Burger equation is derived. By solving the above equation we obtain the corresponding density wave solution, which can be used to explain the propagation and formation properties of traffic congestion. The numerical simulation verifies that the lateral gap coefficient and the electronic throttle angle difference of successive vehicles have significant effects on traffic jams and energy consumption, which is consistent with the theoretical derivation.
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单位佛山科学技术学院
