The technology that helps improve traffic flow in smart cities is intelligent transportation systems (ITS). These systems utilize sensors, data analytics, and advanced communication technologies to monitor and manage traffic patterns in real time. They can adapt traffic signals, provide real-time information to drivers, and integrate public transportation schedules, thereby optimizing traffic flow and reducing congestion. By leveraging data collected from various sources, ITS can enhance safety, improve travel efficiency, and contribute to more sustainable urban mobility solutions.