当前位置: X-MOL 学术J. Intell. Transp. Syst. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A two-sided lateral gap continuum model and its numerical simulation for non-lane based heterogeneous traffic environment
Journal of Intelligent Transportation Systems ( IF 3.6 ) Pub Date : 2020-06-10
Hari Krishna Gaddam, K. Ramachandra Rao

The objective of this study is to model the complex behavior of non-lane based heterogeneous traffic which is predominantly occupied by vehicles with varying physical and dynamical characteristics and their staggered car following behavior. This study proposes a new continuum model by considering the properties of two-sided lateral gap in a non-lane based heterogeneous traffic stream. The model is built on a strong empirical background and modified car following theory. In particular, the model consists of density dependent disturbance propagation speed, viscosity term and a frictional clearance term to describe the complex vehicular interactions in a traffic stream. Viscosity term in the model represents the driver’s reaction to a sudden change in density and further, it helps in smoothening out the shock fronts. Frictional clearance term in the model considers the effect of slow moving vehicles on the dynamics of fast moving vehicles. The results of mathematical and numerical analysis show that the proposed model satisfies all the qualitative and physical properties of the real world system. Moreover, two sided lateral gap in the model improves the stability region of traffic flow and increases the capacity and density of traffic stream. In addition, it is able to dissipate the traffic perturbation rapidly when compared to one-sided lateral gap model. It is anticipated that the new model provides the basis for evaluating alternative transport policy measures and helps in analyzing the system performance in the future.



中文翻译:

基于非车道的异构交通环境的两侧横向间隙连续体模型及其数值模拟

这项研究的目的是对非基于车道的异构交通的复杂行为进行建模,该行为主要由具有不同物理和动力特性的车辆及其交错的车辆跟随行为所占据。这项研究提出了一种新的连续模型,该模型考虑了基于非车道的异构交通流中的两侧横向间隙的特性。该模型基于强大的经验背景和经过改进的汽车遵循理论。特别地,该模型由依赖于密度的扰动传播速度,粘度项和摩擦间隙项组成,以描述交通流中的复杂车辆相互作用。该模型中的粘度项代表驾驶员对密度突然变化的反应,此外,它还有助于消除震动的发生。模型中的摩擦间隙项考虑了慢速行驶的车辆对快速行驶的车辆动力学的影响。数学和数值分析的结果表明,所提出的模型满足了现实世界系统的所有定性和物理性质。此外,模型中的两侧横向间隙改善了交通流的稳定区域,并增加了交通流的容量和密度。此外,与单侧间隙模型相比,它能够快速消除交通干扰。可以预期,新模型将为评估替代运输政策措施提供基础,并有助于将来分析系统性能。数学和数值分析的结果表明,所提出的模型满足了现实世界系统的所有定性和物理性质。此外,模型中的两侧横向间隙改善了交通流的稳定区域,并增加了交通流的容量和密度。此外,与单侧间隙模型相比,它能够快速消除交通干扰。可以预期,新模型将为评估替代运输政策措施提供基础,并有助于将来分析系统性能。数学和数值分析的结果表明,所提出的模型满足了现实世界系统的所有定性和物理性质。此外,模型中的两侧横向间隙改善了交通流的稳定区域,并增加了交通流的容量和密度。此外,与单侧间隙模型相比,它能够快速消除交通干扰。可以预期,新模型将为评估替代运输政策措施提供基础,并有助于将来分析系统性能。此外,与单侧间隙模型相比,它能够快速消除交通干扰。可以预期,新模型将为评估替代运输政策措施提供基础,并有助于将来分析系统性能。此外,与单侧间隙模型相比,它能够快速消除交通干扰。可以预期,新模型将为评估替代运输政策措施提供基础,并有助于将来分析系统性能。

更新日期:2020-06-10
down
wechat
bug