The invention relates to an expressway main line variable speed limit and entrance ramp cooperative control method, and relates to the technical field of traffic management and control. Comprising the steps of predicting traffic flow operation data, calculating a congestion propagation length, determining a main line variable speed limit area, selecting an active control strategy, evaluating a control effect, optimizing a control scheme and a lower control scheme. According to the main line variable speed limit and entrance ramp variable speed limit linkage control strategy for speed limit interval dynamic optimization, the fixed speed limit area and the dynamic speed limit area are arranged on the main line, the opening condition of the speed limit areas is dynamically adjusted according to the congestion propagation condition, the interval length of the main line variable speed limit interval is dynamically adjusted, and the speed limit speed limit effect is improved. Therefore, the variable speed limit area of the main line is adjusted and the control strategy is optimized, so that the problem of speed limit failure caused by insufficient length of the variable speed limit area of the main line under the condition of large-range congestion caused by short-time large flow is solved, and the problem that the upstream passing benefit is reduced due to the overlong variable speed limit area of the main line under the condition of local congestion is solved.
本发明涉及一种高速公路主线可变限速与入口匝道协同控制方法,涉及交通管理与控制技术领域;包括预测交通流运行数据、计算拥堵传播长度、确定主线可变限速区域、选择主动控制策略、评价控制效果、优化控制方案以及下方控制方案;本发明提出限速区间动态优化的主线可变限速和入口匝道可变限速联动控制策略,在主线设置固定限速区域和动态限速区,根据拥堵传播情况动态调节限速区域的开放情况,使得主线可变限速区间的区间长度动态调节,进而调整主线可变限速区域和优化控制策略,解决在短时大流量造成的大范围拥堵情况下由于主线可变限速区域长度不足导致的限速失效问题,以及局部拥堵情况下过长的主线可变限速区间导致上游通行效益下降的问题。
Highway main line variable speed limit and entrance ramp cooperative control method
一种高速公路主线可变限速与入口匝道协同控制方法
09.05.2025
Patent
Elektronische Ressource
Chinesisch
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