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现代有轨电车不同等级交叉口优先配时方案研究

2017-07-06崔梁邓君

物流科技 2017年5期

崔梁+邓君

摘 要:文章基于不同等级的交叉口实施不同的有轨电车优先方案,主干路与主干路相交路口由于交通流量相当且都比较大,所以在传统信号配时模型基础上对固定信号配时进行优化以实现有轨电车的优先通行;主干路与次干路相交路口,主路交通量大次路交通量相对较少,计算绿灯延长策略和红灯早断策略下的优先相位和非优先相位的延误,建立以车辆总延误为目标函数的主动信号优先感应控制模型;主干路与支路相交路口,主路交通量远远大于支路交通量,可采取绝对信号优先感应控制模式,最后通过VISSIM仿真验证文中方法的有效性。

关键词:有轨电车;交叉口分类;定时控制;主动优先;绝对优先

中图分类号:F570 文献标识码:A

Abstract: Different tramcar priority schemes were taken based on the different levels of the intersection in this paper. The intersection of the main road and the main road is relatively large, because of the relatively large traffic flow it is necessary to optimize the fixed signal timing in order to realize the priority of the tramcar. The main road and the road intersection, the main road traffic is large, the road traffic is relatively small, calculate the green light extension strategy and the delay of priority and non priority phases under the red light early fault strategy, established active signal priority control model based on total vehicle delay. The intersection of the main road and branch road, the main road traffic is much greater than the traffic volume, taken absolute signal priority control mode. Finally, the effectiveness of the proposed method is verified by VISSIM simulation.

Key words: tramcar; intersection classification; actued control; active priority; absolute priority

0 引 言

現代有轨电车是介于地铁和公交之间的一种中低运量的新型城市轨道交通工具,它具有安全、舒适、环保、快速的特性,它不仅能够缓解城市道路日益拥堵的压力、减少废气排放的问题,而且可以为公共交通的建设提供新的解决方案。现代有轨电车在欧洲乃至全世界范围内的迅速复兴,足以证明它存在的合理性和未来在国内的广阔发展前景,所以我们要在引进有轨电车技术的同时,提高对有轨电车的认识,加强有轨电车在实际运行中可能会存在的问题的研究。

现代有轨电车路权形式一般可划分为3种[1]:完全独立路权,即有轨电车在路段上独享车道,在交叉路口路权立交化,以此来保证现代有轨电车在路段的高速、安全运行;……

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