The smart traffic light is a common and interesting image processing project where the model analyzes the traffic situation and changes the lights accordingly. It captures the live images of the traffic. You can also feed the horn voices for even better performance.After analyzing the given data, it changes the colour of the light to green if the traffic density is low, yellow if it is medium, and red if the traffic is dense. For emergency vehicles like an ambulance, a bias could be added to the model too.