The efficient functioning of a transportation system is crucial for the growth of any city, as it provides job opportunities and contributes to the economy. But with an increasing population, the demand for faster and more convenient transportation has led to issues such as traffic congestion, accidents, and environmental degradation. Intelligent Transport Systems (ITS) have been developed to solve these problems, and this paper presents a case study approach to ITS implementation in several Asia Pacific countries. Many Asian countries, including Singapore, South Korea, Thailand, and China, have implemented smart mobility using ITS, incorporating technologies like vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), and vehicle-to-everything (V2X) to reinforce their ITS strategy. The benefits of ITS include reduced travel times, less congestion, less fuel consumption, improved manufacturing efficiency, improved quality of life, and increased economic growth. However, the lack of implementation standards, legislation, and a regional ITS data repository, as well as significant upfront and ongoing implementation costs, pose challenges to Asian countries in implementing ITS. The present ITS policy and regulation developments address central financial assistance, standardization, capacity development, and master planning. In conclusion, ITS is a promising solution to the transportation challenges faced by many Asian countries, but comprehensive policies and regulations are needed to address implementation challenges fully. By doing so, the benefits of ITS can be fully realized, leading to a more efficient, safer, and sustainable transportation system
