AUTHOR=Shrestha Rakesh , Oh Inseon , Kim Shiho TITLE=A Survey on Operation Concept, Advancements, and Challenging Issues of Urban Air Traffic Management JOURNAL=Frontiers in Future Transportation VOLUME=Volume 2 - 2021 YEAR=2021 URL=https://www.frontiersin.org/journals/future-transportation/articles/10.3389/ffutr.2021.626935 DOI=10.3389/ffutr.2021.626935 ISSN=2673-5210 ABSTRACT=

The recent growth and adoption of unmanned aerial vehicles (UAVs) is due to their low development cost, high aerial mobility, advanced battery technology, rotors, gyroscopes, GPS, cameras, sensors, and wide range of applications. The UAV offers new possibilities for business in civil and noncivil applications such as parcel delivery, aerial mapping, agriculture, wildlife conservation, surveillance, and search and rescue. However, considering the exponential growth of various types of aerial vehicles, it is clear that advanced air traffic management services are urgently needed to control and handle the ever-increasing air traffics. In this paper, we first present the two major low-altitude UAV traffic management systems in the United States and Europe and compare them thoroughly. We present the global vision and advancement of UAV traffic management system. To understand the complexity of future air transportation system, we discuss the necessary elements required for an urban air traffic management system. We provide key strategic elements for an advanced urban traffic management through connectivity, open source, safety enhancement, and automation to maximize its impacts on the innovative future air traffic and mobility system. In the end, we discuss the challenging security issues in urban traffic management system.