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Study on urban loop-road traffic coordination control system

'Study on urban loop-road traffic coordination control system'
2010 2nd International Asia Conference on Informatics in Control, Automation and Robotics 978-1-4244-5194-4/10/$26.00 ©2010 IEEE CAR 2010 Study on Urban Loop-road Traffic Coordination Control System based on Spit-layer Parallel Cusp Catastrophe Particle Swarm Optimization Algorithm MA Chang-xi, ZENG Jun-wei, QIAN Yong-sheng Traffic and Transportation School Lanzhou Jiaotong University Lanzhou, China E-mail: mcx9815 @163.com GUANG Xiao-ping, SUN Youxin Traffic and Transportation School Lanzhou Jiaotong University Lanzhou, China E-mail:guangx@mail.lzjtu.cn Abstract—According to loop characteristic of partially urban road network, urban loop-road traffic coordination control system based on the spit-layer parallel cusp catastrophe particle swarm optimization algorithm is proposed. In the system, the area control system is replaced by the loop-road line control system, and the control sub-area is closed loop-road in road network, a three-layer stepped distributed construction and the spit-layer parallel cusp catastrophe particle swarm optimization algorithm are established, the cycle, offsets and splits are optimized, and then the preset scheme is formed by cooperative control for different closed loop. The final signal control scheme is ascertained by judgment and choice from system hypothesis surface control rate. The application results indicate the control system can reduce the vehicle delay and the stopping rate effectively in the urban. Index Terms—urban loop-road, traffic control, three-layer stepped distributed construction,spit-layerparallel cusp catastropheparticle swarm optimization (SPCC-PSO), algorithm I.INTRODUCTION With ever-increasing number of vehicles on urban networks, the conflict betweentransportation supply and demand becomes one of the vital issues for human mobility. Applications of Intelligent Transportation Systems, such as Advanced Traffic Management Systems, are widely used to help reducing the gap between traffic supply and demand. At present, many cities introduce the advanced regional traffic coordination control system, such as TRANSYT, SCOOT, SCAT system etc., but these systems can't be very good in conformity with city traffic characteristic of China, the result of use is unsatisfactory. So, according to the road traffic characteristic of China, it is important to design a new regional traffic coordination control system. Many efforts have been made on the artery control system and some optimization algorithms have been put forward, such as maximal through-band method[1], SIGOP offsets optimization algorithm [2], bi-level hierarchical structure optimization algorithm [3], proportion signal offsets design method [4], two-way offsets optimization regulation algorithms [5], optimization offsets design methods based on genetic algorithms[6], variable through-band methods and integral linear programming methods[7-8].Others were studied the traffic control system and its inheritance arithmet
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