A new traffic model on compulsive lane-changing caused by off-ramp

作者：Liu, Xiao-He; Ko, Hung-Tang; Guo, Ming-Min^*; Wu, Zheng

来源：Chinese Physics B, 2016, 25(4): 048901.

DOI：10.1088/1674-1056/25/4/048901

• traffic flow model
• compulsive lane-changing
• off-ramp
• fluid dynamics
• numerical simulation

In the field of traffic flow studies, compulsive lane-changing refers to lane-changing (LC) behaviors due to traffic rules or bad road conditions, while free LC happens when drivers change lanes to drive on a faster or less crowded lane. LC studies based on differential equation models accurately reveal LC influence on traffic environment. This paper presents a second-order partial differential equation (PDE) model that simulates both compulsive LC behavior and free LC behavior, with lane-changing source terms in the continuity equation and a lane-changing viscosity term in the momentum equation. A specific form of this model focusing on a typical compulsive LC behavior, the 'off-ramp problem', is derived. Numerical simulations are given in several cases, which are consistent with real traffic phenomenon.

• 出版日期2016-4
• 单位复旦大学