An FPGA Based Vehicles Density Dependent Intelligent Traffic Light System

In this paper, a vehicles density dependent intelligent traffic light system based on FPGA has been built. The intelligent traffic light system counts the number of available vehicles in the sides of the traffic intersection via the sensors placed on the ends of the road. Subsequently, it determines passage time required for each side, depending on the density of existing vehicles in it, in order to pass the largest number of vehicles in the intersection during a certain time. The proposed system is built using VHDL, simulated using Xilinx ISE 9.2i package, and implemented using Spartan-3A XC3S700A FPGA kit. Implementation and Simulation behavioral model results show that proposed system fits the specified functional requirements, and finds a solution to overcome the problem of traffic jam at intersections