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A two-sided lateral gap continuum model and its numerical simulation for non-lane based heterogeneous traffic environment
| 题名： | A two-sided lateral gap continuum model and its numerical simulation for non-lane based heterogeneous traffic environment |
| 正文语种： | 英文 |
| 作者： | Hari Krishna Gaddam;K. Ramachandra Rao |
| 作者单位： | V.R. Siddhartha Engineering College |
| 关键词： | Continuum traffic flow models; Local cluster effect; Non-lane heterogeneous traffic; Numerical simulation; Two-sided lateral gap |
| 摘要： | 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 back-ground and modified car following theory. In particular, the model consists of density dependent disturbanee propagation speed, viscosity term and a frictional clearanee 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 clearanee 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 in creases 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 alter native tran sport policy measures and helps in an alyzing the system performance in the future. |
| 出版日期： | 2020 |
| 出版年： | 2020 |
| 期刊名称： | Journal of Intelligent Transportation Systems Technology Planning and Operations |
| 卷： | Vol24 |
| 期： | No01-06 |
| 页码： | 635-651 |
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