Traffic bottleneck characteristics caused by the reduction of lanes in an optimal velocity model

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• 作者：Jian Zhang ; Xiling Li ; ^{lixingli80@163.com} ; Rui Wang ; Xiaosi Sun ; Xiaochao Cui
• 关键词：Lane reduction ; Optimal velocity model ; Traffic phase transition ; Traffic flow
• 刊名：Physica A
• 出版年：2012
• 出版时间：1 April 2012
• 年：2012
• 卷：391
• 期：7
• 页码：2381-2389
• 全文大小：1231 K

文摘

In this paper, the lane reduction bottleneck is investigated using the optimal velocity model, in which two kinds of vehicles (fast and slow) are introduced. The asymmetric lane changing rules in the slowdown section and the lane squeezing behaviors at the bottleneck are taken into account. Under the periodic boundary condition, the numerical simulations are performed. The traffic states change with increasing density. And an interesting phenomenon of ratio inversion appears. When the current saturates, the headway and velocity discontinuously vary with the position. In addition, traffic patterns and the phase transition points depend greatly on the speed limit and the length of the slowdown section.