SUBDIVISION OF SIGNAL SYSTEMS INTO CONTROL AREAS
SUBDIVISION OF SIGNAL SYSTEMS INTO CONTROL AREAS
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发表时间：
1973-09
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通讯作者：
H. Yagoda;E. Principe;C. E. Vick;B. Leonard
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作者：
H. Yagoda;E. Principe;C. E. Vick;B. Leonard
解决了交通运营商面临的问题。它们是，即，是否协调两个相邻的信号交叉口的时间，以及是否将信号网络细分为两个或更多个城市交通控制区;如何确定可能证明有益的候选细分边界;以及如何确定沿着特定边界的细分是否有益。采用计算机分析程序的分析方法已被用来解决这些问题。实验已经确定，在从信号交叉口释放的一队交通中经历的扩散随着行进的距离而增加。因此，协调相邻信号交叉口所产生的效益往往会随着信号交叉口之间距离的增加而减少。定义了耦合指数，并介绍了温斯顿-塞勒姆研究的应用。本研究的目的之一是将控制区域定义的变化作为一天中时间的函数，因为许多链接上的音量随时间显著变化。完成网络细分后，进行了受益分析，以确定解耦过程的有效性。这里描述的耦合指数分析提供了一种简单直接的技术，通过该技术可以识别可能实现潜在有益细分的边界。
QUESTIONS THAT FACE TRAFFIC ENGINEERS ARE DISCUSSED. THEY ARE, NAMELY, WHETHER OR NOT TO COORDINATE THE TIMING AT TWO ADJACENT SIGNALIZED INTERSECTIONS, AND WHETHER OR NOT TO SUBDIVIDE A SIGNALIZED NETWORK INTO TWO OR MORE URBAN TRAFFIC CONTROL AREAS; HOW TO LOCATE CANDIDATE SUBDIVISION BOUNDARIES WHICH MIGHT PROVE BENEFICIAL; AND AND HOW TO DETERMINE WHETHER OR NOT SUBDIVISION ALONG A PARTICULAR BOUNDARY IS BENEFICIAL. ANALYTICAL METHODOLOGY EMPLOYING COMPUTER ANALYSIS PROGRAMS HAVE BEEN USED TO RESOLVE THESE QUESTIONS. EXPERIMENTS HAVE ESTABLISHED THAT THE DISPERSION EXPERIENCED WITHIN A PLATOON OF TRAFFIC RELEASED FROM A SIGNALIZED INTERSECTION INCREASES WITH THE DISTANCE TRAVELLED. AS A RESULT, THE BENEFITS TO BE DERIVED FROM COORDINATING ADJACENT SIGNALIZED INTERSECTIONS TENDS TO DIMINISH AS THE DISTANCE BETWEEN SIGNALIZED INTERSECTIONS IS INCREASED. A COUPLING INDEX IS DEFINED AND THE APPLICATION OF THE WINSTON-SALEM STUDY IS DESCRIBED. ONE OF THE OBJECTIVES OF THIS STUDY WAS TO INVESTIGATE VARIATIONS IN THE DEFINITION OF CONTROL AREAS AS A FUNCTION OF TIME OF DAY SINCE THE VOLUME ON MANY OF THE LINKS VARIED SIGNIFICANTLY WITH TIME. AFTER SUBDIVISION OF THE NETWORK WAS ACCOMPLISHED AN ANALYSIS OF BENEFITS WAS CONDUCTED TO ESTABLISH THE VALIDITY OF THE DECOUPLING PROCESS. THE COUPLING INDEX ANALYSIS DESCRIBED HERE PROVIDES A SIMPLE STRAIGHTFORWARD TECHNIQUE BY WHICH TO IDENTIFY THE BOUNDARIES AT WHICH POTENTIALLY BENEFICIAL SUBDIVISION MAY BE ACCOMPLISHED.