The emergence of smart cities as a solution to the challenges posed by urbanization and population growth has paved the way for the integration of information and communication technology with traditional infrastructure. This research explores the integration of smart city concepts, particularly the Internet of Things and Big Data, in traffic control systems to enhance safety and sustainability. The study focuses on the role of intelligent traffic systems, including traffic lights, in smart cities and the potential impact of self-driving cars on traffic safety. The paper highlights the importance of traffic lights in reducing emissions and easing traffic congestion in urban areas. Additionally, the research discusses the human element in traffic control and provides suggestions for enhancing the capabilities of traffic workers to adapt to the modern smart city environment. Overall, this paper aims to provide insights into the applications and impact of smart cities on traffic safety and sustainable development.