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原文传递 Gray Areas in Isolated Intersection Control-Type Selection: Complementary Decision-Support Tool

题名：	Gray Areas in Isolated Intersection Control-Type Selection: Complementary Decision-Support Tool
其他题名：	Akcelik,R.(1981)."Traffic signals:Capacity and timing analysis."ARRB Research Record 123,Australian Road Research Board,Vermont South,VIC,Australia.
正文语种：	英文
作者：	Bumjoon Bae
关键词：	quantification；control；framework；alternative；section；signal；decision；effectiveness；quantitative；delay
摘要：	The intersection control-type selections for future facilities can be determined by comparison of a common measure of effectiveness that is average control delay. However, rigid comparisons of such measures tend to mislead the decision-making process in practice, since there must be latent factors in quantification. To this end, this paper proposes the performance comparison framework of different transportation facility alternatives using a common quantitative measure. By considering the uncertainties in a quantification process, the proposed framework provides gray areas (i.e., intuitively visualized information, which decision-makers can use to assist in their engineering decisions). The average control delay of two-way stop control, all-way stop control, signal control types, and roundabouts were compared with contour lines of delay differences. It is found that the delay of a roundabout increases rapidly as the traffic demand increases. Hence, a signal control type has the minimum delay level in that case, despite the fact that the roundabout outperforms for most of the lowdemand conditions. When the signal timing plan is optimized, this feature becomes evident. With consideration of the margin of error in the delay, a gray area on the minimum delay surface between the signal control and roundabout types enlarges in the low-demand area. The gray areas can be utilized by practitioners to decide the best intersection control type with consideration of construction and maintenance costs over delay reduction benefit.
出版年：	2017
论文唯一标识：	P-72Y2017V143N11005
英文栏目名称：	TECHNICAL PAPERS
doi：	10.1061/JTEPBS.0000085
期刊名称：	Journal of Transportation Engineering
拼音刊名(出版物代码)：	P-72
卷：	143
期：	11
页码：	21-28