Smart traffic signals are advanced traffic control systems that use technology to improve traffic flow and reduce congestion. They can adapt to real-time traffic conditions by using sensors and cameras to monitor vehicle and pedestrian movement. This allows them to change signal timings dynamically, ensuring that traffic moves more efficiently. These signals can also communicate with other smart devices, such as connected vehicles and traffic management systems, to provide better coordination. By optimizing traffic patterns, smart traffic signals help decrease travel times, lower emissions, and enhance safety for both drivers and pedestrians.