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高速公路协调控制信号施加策略

, PP. 131-138

Keywords: 智能交通系统,高速公路,元胞自动机模型,协调控制,匝道控制,可变速度限制

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Abstract:

研究高速公路协调控制信号施加策略问题。在STNS模型的基础上,建立可利用智能交通系统实时信息由一个入口匝道和一段主线组成的高速公路区段协调控制元胞自动机模型,对该区段实施不同控制信号策略的交通流特性进行了仿真。分析了不同的交通状态、主线上游流量和匝道需求下,分别实施不施加控制信号、仅施加匝道控制信号、仅施加可变速度限制信号、匝道控制和可变速度限制信号均施加4种方式对道路实际通行能力和交通流的影响。结果表明协调控制作为高速公路管理控制的主要手段,具有较好的适用性,针对不同交通需求,分别采取不同的控制信号施加策略,可达到减少车辆总通行时间、抑制交通拥堵从而提高道路实际通行能力的目的。

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