Smart cities utilize sensors for data collection to monitor and manage various urban aspects such as traffic flow, air quality, and energy consumption. These sensors gather real-time data across multiple domains, providing insights that inform infrastructure management and urban planning. For example, traffic sensors can analyze vehicular patterns to optimize traffic signals, while environmental sensors can track pollution levels for better public health initiatives. Smart cities leverage this collected data through analytics platforms to make data-driven decisions, improving overall efficiency and enhancing the quality of life for residents. The integration of sensors is essential for the development of connected, responsive urban environments.