A Systematic Literature Review of Current IoT-Based Approaches for Improving Sustainable Public Transportation in Smart Cities

Following the awareness of the need to optimize the sustainability of public transportation resources, we conduct a systematic literature review of the current Internet of Things-based approaches and technologies improving sustainable public transportation in smart cities. Using internationally peer-reviewed literature, we analyze the current state of research and identify research gaps. Major findings include the flexibility of various sensors for different use cases, data collection hot spots in public transportation, and the quality of service enhancements for passengers. Our study aims to provide practitioners and researchers with guidance on applying Internet of Things-based approaches to develop smart and sustainable transportation solutions in smart cities.