CAJ | 학술논문

在城市交通控制中,很多研究尝试为多个信号交叉口设计最优的协调控制方案,从而使得车队在通过多个交叉口时能够获得一系列连续的绿灯信号,无需停车、不间断地运行,这样可减少一些不必要的停车延误时间,而这种停车延误在现实中往往比较可观.此类协调控制的主要目标之一是获取最大绿波带,通过调整各个交叉口之间的相位差以及各个交叉口本身的相序来实现.目前在实际中得到应用的有关模型和方法大多是以混合整数规划为基础的一种线性最优化模型,最早由Little等人于1966年提出.这种模型的基本局限性在于,对于面控系统,需要引入数量众多的复杂约束.本文提出了一种新型简便的最优化方法,通过最大化可变绿波带实现对干线和网络各信号交叉口的最优协调控制.从应用范围来看,该方法与混合整数规划方法的不同点在于规避了对实施协调控制的道路网络的封闭性要求,因而是一种全新的方法.此外,本文还利用2个实例对该方法在交通信号协调控制中的有效性和实用性进行了验证.
재성시교통공제중,흔다연구상시위다개신호교차구설계최우적협조공제방안,종이사득차대재통과다개교차구시능구획득일계렬련속적록등신호,무수정차、불간단지운행,저양가감소일사불필요적정차연오시간,이저충정차연오재현실중왕왕비교가관.차류협조공제적주요목표지일시획취최대록파대,통과조정각개교차구지간적상위차이급각개교차구본신적상서래실현.목전재실제중득도응용적유관모형화방법대다시이혼합정수규화위기출적일충선성최우화모형,최조유Little등인우1966년제출.저충모형적기본국한성재우,대우면공계통,수요인입수량음다적복잡약속.본문제출료일충신형간편적최우화방법,통과최대화가변록파대실현대간선화망락각신호교차구적최우협조공제.종응용범위래간,해방법여혼합정수규화방법적불동점재우규피료대실시협조공제적도로망락적봉폐성요구,인이시일충전신적방법.차외,본문환이용2개실례대해방법재교통신호협조공제중적유효성화실용성진행료험증.
Attempts are often made to find an optimal coordinated control plan for a group of traffic signals in urban areas, such that platoons of vehicles can proceed through a continuous series of green lights without stopping, thereby reducing considerable unnecessary delay. One main objective of coordinated control is to provide the maximum bandwidth progression by adjusting the offset and phase sequence pattern for each signalized intersection. Most models and methods currently being used are based on mixed-integer linear programming (MILP), which is a mathematical optimization model originally formulated by Little et al. in 1966. A basic limitation of the MILP is that it adds a large number of complex constraints for traffic control networks. In this paper, a new simple method is introduced for finding the optimization plan of arterial and network control by maximization of variable bandwidth. This method has not any "loop" constraints and a completely new approach compares to the MILP method applied in this field. In addition, the results of two examples this paper provided validity and feasibility of this new approach in real applications of traffic signal coordination control.