Traffic Light Control Using Nexys A7

Abstract

A traffic light controller is an electronic device that controls the sequence of traffic signals at an intersection, ensuring smooth and safe traffic flow. In modern traffic light controllers, digital logic circuits are used to control the sequence of traffic signals. The traffic light controller uses a state machine to determine the sequence of traffic signals. The state machine has a set of states, each of which corresponds to a particular sequence of traffic signals. The state machine changes state based on a set of input signals, such as a clock signal or a pedestrian signal. Here we are implementing a 4-way traffic light controller which is designed to manage the flow of vehicular and pedestrian traffic at an intersection with four directions: North, South, West, and East. Each direction is represented by a different label or abbreviation, such as m1 for North, m2 for South, m3 for West, and m4 for East. The purpose of a 4-way traffic light controller is to regulate and optimize the flow of traffic at intersections. It ensures safe and efficient movement of vehicles by assigning right-of-way to different directions in a coordinated manner. By alternating the signal lights, it reduces the chances of accidents and congestion, improving overall traffic management