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协调控制下主动信号优先策略的最佳周期模型

Keywords: 交通工程,干道协调,主动信号优先,最佳周期,优先时间

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Abstract:

对于公交信号优先的研究侧重于已知周期下优先策略的效益及参数,所采用的周期不一定最优。考虑协调控制约束的基础上,以主路上关键交叉口为对象,量化讨论了3种典型TSP策略对延误造成的影响。建立了基于优先策略最大可能效益的最佳周期模型。并结合实例分析了实际可能流量条件变化对主动信号优先策略最佳周期的影响。结果表明在特定流量组合下,增加传统TRRL公式得到的周期存在一定效益,增加幅度随优先相位与非优先相位流量之比增加而变大,可针对流量条件动态选取运行周期。此外,对比发现红灯早断策略的效果略优于绿灯延长策略。

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