Traffic Light Controller System Analysis based on FPGA

Nowadays, the economy has developed to a high level, the construction of urban infrastructure grows in importance, and the vehicle parc is increasing quickly in our country. The Urban traffic congestion problem becomes more and more serious. Then it is one of the valid solutions to solve traffic issue in the reality. On the other hand, with the development and innovate of Programmable logic technology, Field Programmable Gate Array (FPGA) is used in the digital system design widely and becomes booming development. As a result, this article researches the Traffic signal controllers based on FPGA. Starting from the design requirements, the traffic light controller system is divided into three main parts to design, and it is simulated by using Verilog HDL language. Finally, the program is downloaded to the FPGA chip for hardware verification. The simulation and hardware verification results demonstrate that the traffic light control system not only achieves conventional traffic command functions but also adjusts traffic timing to some extent based on changes in traffic flow during peak and off-peak hours. Additionally, it includes a feature to prioritize emergency vehicles under special circumstances, effectively enhancing intersection traffic efficiency