The integration of Industry 4.0 and automated vehicles into smart city infrastructure is a key topic in urban development and technological innovation. This paper explores the synergies between these technologies in smart cities, focusing on their potential to improve transportation efficiency, resource utilization, and urban sustainability. The study highlights both the benefits and challenges of integrating these technologies, including environmental, social, legal, and ethical issues. The research uses a combination of literature review, case studies, and analysis to examine the potential of these technologies in smart cities. It also discusses the current state of knowledge, identifies gaps, and provides insights for policymakers, urban planners, and researchers. The paper emphasizes the importance of collaboration among stakeholders to fully realize the benefits of these technologies. It also addresses the challenges of data security, infrastructure compatibility, and regulatory frameworks. The study concludes that the integration of Industry 4.0 and automated vehicles in smart cities has significant potential to enhance transportation efficiency, energy management, and urban sustainability. The paper also highlights the need for further research and development in this area. The research is based on a comprehensive literature review, including case studies from cities like Barcelona and Singapore. The study also discusses the differences between automated and autonomous vehicles, their levels of automation, and the cybersecurity legislation related to automated vehicles. The paper concludes that the integration of these technologies in smart cities is a promising solution for creating more efficient, sustainable, and intelligent urban environments.The integration of Industry 4.0 and automated vehicles into smart city infrastructure is a key topic in urban development and technological innovation. This paper explores the synergies between these technologies in smart cities, focusing on their potential to improve transportation efficiency, resource utilization, and urban sustainability. The study highlights both the benefits and challenges of integrating these technologies, including environmental, social, legal, and ethical issues. The research uses a combination of literature review, case studies, and analysis to examine the potential of these technologies in smart cities. It also discusses the current state of knowledge, identifies gaps, and provides insights for policymakers, urban planners, and researchers. The paper emphasizes the importance of collaboration among stakeholders to fully realize the benefits of these technologies. It also addresses the challenges of data security, infrastructure compatibility, and regulatory frameworks. The study concludes that the integration of Industry 4.0 and automated vehicles in smart cities has significant potential to enhance transportation efficiency, energy management, and urban sustainability. The paper also highlights the need for further research and development in this area. The research is based on a comprehensive literature review, including case studies from cities like Barcelona and Singapore. The study also discusses the differences between automated and autonomous vehicles, their levels of automation, and the cybersecurity legislation related to automated vehicles. The paper concludes that the integration of these technologies in smart cities is a promising solution for creating more efficient, sustainable, and intelligent urban environments.