In many parts of North India, especially during winter, dense fog reduces visibility on roads to a very low level. During such conditions, drivers are often unable to see traffic signals clearly until they are very close to the intersection. As a result, vehicles may unknowingly cross red signals or brake suddenly when the signal becomes visible at the last moment. This situation increases the chances of road accidents, vehicle collisions, and traffic chaos., This problem is especially serious on busy intersections where multiple roads meet. Drivers, bikers, and pedestrians all face confusion due to poor visibility. Large vehicles like trucks and buses also struggle to stop quickly when they suddenly notice the signal., Although traffic lights work normally, their visibility becomes very poor in fog. Many cities experience this issue every winter, yet there is limited awareness about how dangerous it can be. This problem affects daily commuters, students traveling to schools, and workers going to offices., Observing roads during foggy mornings clearly shows vehicles slowing down, stopping suddenly, or crossing intersections without noticing the signal. Because foggy weather occurs every year, the risk repeats regularly.