Four-dimensional (4D) analysis is an advanced analytical methodology that integrates geospatial, temporal, and time-series data to evaluate how variables change across both three-dimensional space and time. It is widely used in intelligent transportation and logistics for predictive fleet maintenance and route optimization, in urban planning and smart cities to manage traffic patterns and infrastructure usage, in project management (BIM) to track construction scheduling, and in scientific research such as biomedical imaging to map physiological processes over time.