Abstract: Retrograde behavior of non-motor vehicles poses a very severe risk to the safety of drivers and has great impact on the traffic efficiency.A microscopic simulation model of mixed bicycle flow considering retrograde behavior was established to investigate the influence of retrograde behavior on the traffic characteristics of mixed bicycle traffic flow.The impacts of the proportion of electric bicycles and retrograde bicycles on the mixed bicycle traffic flow and the setting conditions of one side two-way non-motor vehicle lanes were simulated and analyzed.Research results indicate that the retrograde behavior can reduce the speed and flow of the mixed bicycle traffic flow.The speed and flow of the mixed bicycle traffic flow have a non-linear relationship with the proportion of the retrograde bicycles.As the density of traffic flow is relatively small, the speed of traffic flow with low retrograde proportion decreases faster than that with high retrograde proportion as the density increases.The maximum flow of traffic flow with low retrograde proportion is smaller than that with high retrograde proportion.Reasonable setting of one side two-way non-motor vehicle lanes can improve traffic efficiency.

Key words: traffic and transportation engineering; mixed bicycle traffic flow; retrograde behavior; cellular automaton

摘要： 非机动车逆行严重威胁驾驶人的人身安全，且对道路通行效率影响极大。为研究逆行行为对混合自行车流交通特性的影响，建立了考虑逆行行为的混合自行车流微观仿真模型，通过仿真分析电动自行车比例、逆行车辆比例对混合自行车流的影响以及单侧双向非机动车道的设置条件。研究结果表明：逆行行为会降低混合自行车流的速度和流量；混合自行车流的速度和流量与逆行车辆比例成非线性关系；车流密度相对较小时，随着密度的增加低逆行比例的车流平均速度下降速度比高逆行比例的车流平均速度下降速度快；逆行比例较小时的最大流量比逆行比例较大时的最大流量小；合理设置单侧双向非机动车道可以提高通行效率。

关键词: 交通运输工程；混合自行车流；逆行行为；元胞自动机