SIMULATION AND OPTIMZING TRAFFIC FLOW AT SIGNALIZED INTERSECTION USING MATLAB

Abstract

The issue of traffic is a complex one requiring design, planning, engineering and institutional inputs for developing a proper solution. Dealing with traffic at intersection requires, many a times, the study and installation of traffic signals. Signalized intersection locations form the most common bottleneck points in cities across the world. There are many factors that affect the traffic behavior on the signalized intersection; such that number of phases, the arrival rate at the entrance, delay patterns, and the timing diagram.In this research, optimization technique by using cellular autmata technique with taking the benefit of the abilities of MATLAB software. The traffic simulation models have been generally used to study traffic operations and systems impacts cause simulation is safer, less expensive and faster than field implementation and testing. Their use has also increased dramatically in recent years due to their flexibility and ability to visualize simulations. To achieve out the above objective, traffic data is collected at the network in CBD area (AL Mansur) in Baghdad city. Video recording is used to collect field data for three intersections because it provides permanent record of data with minimum manpower. These data are abstracted from video records, and processed by prepared EXCEL sheet. VISSIM simulation software V 5.0 is used to analyze the delay of these intersections by reducing the cycle length and getting less delay A traffic Simulation program that use Nasch model was prepared and processed, the outputs of this model are very close to the output of the VISSIM, which means that the prepared program could be reliable.