The sustainability of a transportation system is a major concerning factor for urbanisation, as evidenced by the ever-growing problems of air pollution issues in major cities. While the growing population and migration don't have too much control to overcome the widespread use of public and personalised vehicles, it has destroyed our global environment. Therefore, the expansion of the transportation system should be carefully planned for global sustainability: so-called green transportation or sustainable transportation. In this paper, factors that should be considered when implementing green transportation for global sustainability have been critically reviewed. Firstly, barriers and challenges associated with current travel demands and blocking the implementation of green transportation have been identified. A three-step strategy (so-called ASI strategy, i.e., avoid, shift, and improve strategy), which had been proposed to overcome the challenges and barriers, was investigated. Identification of innovative technologies or management approaches has been proposed for greening the public transportation system. Finally, some well-recognised success stories of the ASI strategy were presented, in which Avoid can reduce 146–312 kg_CO2/y, Shift can be reduced 0.27 kg_CO2/revolution of vehicles use and Improve can be reduced 12.4% CO₂ emissions. This review guides successful urban planning through the green transportation system.

交通系统的可持续性是城市化的一个主要关注因素，主要城市空气污染问题日益严重就证明了这一点。虽然不断增长的人口和移民无法克服公共和个性化车辆的广泛使用，但它已经破坏了我们的全球环境。因此，交通系统的扩展应该为全球可持续性而仔细规划：所谓的绿色交通或可持续交通。在本文中，在实施绿色交通以实现全球可持续性时应考虑的因素已经过严格审查。首先，已经确定了与当前出行需求和阻碍绿色交通实施相关的障碍和挑战。即，避免、转变和改进策略），已提出来克服挑战和障碍，进行了调查。已提出识别创新技术或管理方法以绿化公共交通系统。最后，介绍了一些公认的ASI战略成功案例，其中Avoid可以减少146-312 kg _CO2 /y，Shift可以减少0.27 kg _CO2 /revolution of vehicle use和Improve可以减少12.4% CO ₂排放. 该审查通过绿色交通系统指导成功的城市规划。