文摘
This study proposes a new car-following model that considers the effects of two-sided lateral gaps on a road without lane discipline. In particular, a car-following model is proposed to capture the impacts from the lateral gaps of the leading vehicles on both sides of the following vehicle. Linear stability analysis of the proposed model is performed using the perturbation method to obtain the stability condition. Nonlinear analysis is performed using the reductive perturbation method to derive the modified Korteweg de Vries equation to describe the density wave propagation. Results from numerical experiments illustrate that the proposed car-following model has larger stable region compared to a car-following model that considers the effect of lateral gap on only one side. Also, it is able to more rapidly dissipate the effect of a perturbation such as a sudden stimulus from a leading vehicle. In addition, the findings of this study provide insights in analyzing system performance of a non-lane-discipline road system in the future.