Synergetic Study Of ACTRA Control System And Guidance System

The cooperation of traffic control and traffic flow guidance is the urgent measure of gathering traffic resources, constructing the economic transportation, and realizing the network, information, intelligence of traffic management. Traffic control system assigns the right of way to the vehicles on road intersection in time aspect, and it is a passive way for traffic management, although reduces the vehicles conflict, and enhances the security, if the choice of signal parameter is unreasonable, traffic control system will bring large delay, and reduces social efficiency. However, Traffic flow guidance system is an active management; it issues real-time transportation information on road network, and provides the best travel way for drivers, balances the volume on road network reasonably in space aspect. Unifying traffic control system and guidance system under the frame of Intelligence Transportation System, which may enrich the means and the way of traffic management, enable the ability of two systems to exert fully, and enhance the effect and the efficiency of traffic management.This article comprehensive summarize the research harvests, including the domestic and foreign cooperation of traffic control system and traffic flow guidance system, thoroughly analyze the theory mechanism of traffic control system and traffic flow guidance system, as well as the present application of ACTRA system in Beijing, these provide the theory preparation for studying the cooperation of ACTRA control system and guidance system. This article take synergetics principle as the basic theory, on the base of the feasibility of using synergetics into Intelligent Transportation System, has established the cooperative model of control and guidance, and analyzed the model in detail. Because it is necessary to study the cooperation of control and guidance, and ACTRA system has been applied in widely Beijing now. These have decided it is necessary that the article studies the cooperation of ACTRA control system and guidance system, taking ACTRA control system as an example. Under the instruction of the cooperative theory frame of traffic control system and traffic guidance system, the article analyzes the process of ACTRA system controlling the road intersection on the base of guidance information, and thoroughly studies the adjustment and optimization of the related parameter (cycle, split and offset) of ACTRA system, and proposes the control algorithm and offset optimized algorithm of ACTRA system under guidance information condition. The article has reached the cooperation of ACTRA control system and guidance system, thus has achieved the common goal of transportation optimization management, has realized the resource conservation and the conformity of traffic management system, and has realized space and time supplementary of traffic management method and has provided the technical guidance for ACTRA system displaying its coordinative control function of regional main line well.