Smart transportation systems that include 3D printing and modeling technology are a game-changer in terms of design and production. In this chapter, we look at how these technologies may be used to make today’s transportation systems more efficient, personalized, and useful. With the use of 3D modeling, transportation systems and components may be accurately shown and simulated, leading to better analysis of performance and new ideas for design. Coupled with 3D printing, which enables rapid prototyping and the production of complex, bespoke parts, this combination offers significant advantages in terms of cost reduction, time efficiency, and adaptability. The study examines various case studies where 3D modeling and printing have been implemented in smart transportation projects, including the development of lightweight vehicle components, customizable infrastructure elements, and advanced traffic management tools. Additionally, it addresses the challenges and limitations of these technologies, such as material constraints and scalability issues, and proposes potential solutions for overcoming these hurdles. Overall, this chapter highlights the transformative potential of 3D modeling and printing in creating more responsive, efficient, and adaptable transportation systems. It offers insights into future directions for research and development in this field, emphasizing the role of these technologies in shaping the future of smart transportation.