协调控制下主动信号优先策略的最佳周期模型

doi:10.3969/j.issn.1002-0268.2012.07.018

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摘要 Studies on active transit signal priority (active TSP) focus primarily on the advantages and parameters of priority strategies within a given cycle time, which is not necessarily the optimal cycle. With consideration for the restrictions resulting from arterial coordination, the effect of three active TSP strategies on vehicle delays at a key intersection on an arterial road was discussed. Using an actual case, the effect of possible real volume variations on optimal cycles under active TSP strategies was analyzed. Results show that under special flow conditions, additional benefits exist when the cycle time is increased from the value generated by the TRRL approach. The extent of increase can rise with the ratio of priority phase flow to nonpriority phase flow. Cycle time can be dynamically established in accordance with the flow conditions in actual operations. The findings also show that the efficacy of red truncation is better than that of green extension.

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	谭真
	梅振宇
	黄志义
	马万经

关键词 ： traffic engineering, active TSP, optimal cycle, arterial coordination, priority window

Abstract：Studies on active transit signal priority (active TSP) focus primarily on the advantages and parameters of priority strategies within a given cycle time, which is not necessarily the optimal cycle. With consideration for the restrictions resulting from arterial coordination, the effect of three active TSP strategies on vehicle delays at a key intersection on an arterial road was discussed. Using an actual case, the effect of possible real volume variations on optimal cycles under active TSP strategies was analyzed. Results show that under special flow conditions, additional benefits exist when the cycle time is increased from the value generated by the TRRL approach. The extent of increase can rise with the ratio of priority phase flow to nonpriority phase flow. Cycle time can be dynamically established in accordance with the flow conditions in actual operations. The findings also show that the efficacy of red truncation is better than that of green extension.

Key words： traffic engineering active TSP optimal cycle arterial coordination priority window

收稿日期: 2013-01-20

基金资助:Supported by the National Natural Science Foundation of China (No.50908205);the Natural Science Foundation of Zhejiang Province of China (No.LY12E08020);and the National High-Tech Research and Development Program (863 Program) (No.2011AA110302)

通讯作者: TAN Zhen, tanzhen_thomas@163.com E-mail: tanzhen_thomas@163.com

引用本文:

谭真, 梅振宇, 黄志义, 马万经. 协调控制下主动信号优先策略的最佳周期模型[J]. Journal of Highway and Transportation Research and Development, 2013, 7(3): 76-83.
TAN Zhen, MEI Zhen-yu, HUANG Zhi-yi, MA Wan-jing. Optimal Cycle Model Based on Active Transit Signal Priority Strategies in Artery Coordination Systems. Journal of Highway and Transportation Research and Development, 2013, 7(3): 76-83.

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