Priority Based Automatic Traffic Control Mechanism

Traffic control system is an interconnection of signaling devices positioned at road intersections, pedestrian crossings and other locations to control competing flows of traffic. This paper presents basic notions and application procedures of Priority Based Automatic Traffic Control Mechanism, and outlines current and potential applications of these methodologies for efficient traffic and transportation control systems. This mechanism is necessary and it may be applied to modern cities wherever particular paths have more traffic jam compared to other paths signals. This mechanism is well suited for controlling the traffic of old cities which are not preplanned before construction. But if we are going to construct a preplanned city we may choose appropriate traffic control mechanism to control the traffic. This paper discusses general concepts of traffic control mechanism and proposes priority based scheduling algorithm for automatic traffic control mechanism. Keyword: Priority Scheduling, Traffic signals, Paths, Interconnection. INTRODUCTION The normal function of traffic lights [7] needs complicated control and coordination to ensure that traffic moves as smoothly and safely as possible and also pedestrians are protected when they cross the roads. A variety of different control systems are used to accomplish this, ranging from simple clockwork mechanisms to complicated computerized control and coordination systems that are self-adjusted to minimize delay when people using the road. Manual operations on traffic controller assemblies [3] begin with a section describing common ministry intersections, traffic movements and signal displays. An Advance Warning System is a safety feature that warns drivers to prepare to stop at an approaching intersection. The light is either red, or about to turn red. An Advance Warning System consists of a set of flashing lights, mounted on a special warning sign. This sign is installed at a prescribed distance on an approach to an intersection. The warning lights are controlled by electronics within the traffic controller assembly. Traffic signals [10] are used to assign vehicular and pedestrian right-of-way. They are used to promote the orderly movement of vehicular and pedestrian traffic and to prevent excessive delay to traffic, moving traffic in an orderly fashion, minimizing delay to vehicles and pedestrians, reducing crash-producing conflicts and maximizing capacity for each intersection approach. A traffic engineering study must be conducted to determine whether the traffic signal should be installed. The installation of a traffic signal requires sound engineering judgment. Advantages of traffic signals that are properly located and operated are likely to: Provide for orderly movement of traffic; Increase traffic capacity of the intersection; Reduce the frequency of certain types of crashes (e.g. right-angle crashes); Provide for continuous movement of traffic along a given route; and Interrupt heavy traffic to permit other traffic, vehicular or pedestrian, to cross. Disadvantages of Signals are justified by traffic and roadway conditions, traffic control signals can be ill-designed, ineffectively placed, improperly operated, or poorly maintained. Unjustified or improper traffic control signals can result in one or more of the following disadvantages: Excessive delay; Excessive disobedience of the signal indications; Increased use of less adequate routes as road users attempt to avoid the traffic control signals; and significant increases in the frequency of crashes. In this work, the priority based automatic traffic control mechanism for cities is developed [1, 15, 17]. Some of the popular algorithms used for traffic control mechanism are i) CoSIGN, A Parallel Algorithm [20] for Coordinated Traffic Signal Control developed by Shih-Fen Cheng, Marina A. Epelman, and Robert L. Smith in 2006. ii) Evolutionary Algorithms [12] are used in Adaptive Traffic Control. The aim of this is to develop a fully distributed responsive traffic signal control system. iii) Traffic Control with Standard Genetic Algorithm [4]. Simulated optimization control of a Traffic Intersection conducted by Gustaf Jansson in 2010. iv) An Efficient Traffic Routing [18] using Ant Colony Optimization. This report will look into the use of Ant Colony Optimization can be used to find efficient traffic routing solutions. v) A New Genetic Algorithm Based Lane-By-Pass [19] Approach for Smooth Traffic Flow on Road Networks. This paper a new lane JOURNAL OF ADVANCEMENT IN ENGINEERING AND TECHNOLOGY Journal homepage: http://scienceq.org/Journals/JAET.php Research Article Open Access