With the rise of communication services with stringent requirements, such as autonomous driving and in-flight Internet, the sixth-generation (6G) wireless network is anticipated to be a key enabler for future transportation systems. The authors in [1] explored ubiquitous connectivity across diverse space-air-ground transportation systems, including railways, airplanes, high-altitude platforms, and satellites.

1. Liu R, Hua M, Guan K, Wang X, Zhang L, Mao T, Zhang D, Wu Q, Jamalipour A. 6G enabled advanced transportation systems. IEEE Transactions on Intelligent Transportation Systems. 2024 Feb 19.

The authors of [1] proposed a new synchronized delivery approach that uses trucks and multi-swarm unmanned aerial vehicles (UAV) for essential services in the 6G network. The proposed approach consists of determining the optimal placement of the trucks. Based on the placement of trucks, a certain number of UAVs can be deployed to assist the trucks by delivering products or performing essential services. The proposed environmentally friendly approach can reduce delivery time and road congestion.

[1] Raja G, Saravanan G, Dev K. 6G-Assisted UAV-Truck Networks: Toward Efficient Essential Services Delivery. IEEE Communications Standards Magazine. 2023 Sep;7(3):4-9.

The authors in [1] highlighted that significant financial burdens are imposed on major cities due to traffic congestion. In 2019, it was estimated that New York City incurred annual economic losses of $11.0 billion, while Los Angeles suffered losses of $8.2 billion. On average, each traveler wasted 140 hours and 103 hours annually in these cities due to congestion. Urban aerial mobility is poised to reshape the future of urban transportation by addressing and alleviating road transport congestion.

[1] Wang, Kai, and Xiaobo Qu. "Urban aerial mobility: Reshaping the future of urban transportation." The Innovation 4.2 (2023).

General low-altitude airspace management[1]

The authors in [1] presented the global vision and advancement of unmanned aerial vehicles (UAV) traffic management
system.

[1] Shrestha, Rakesh, Inseon Oh, and Shiho Kim. "A survey on operation concept, advancements, and challenging issues of urban air traffic management." Frontiers in Future Transportation 2 (2021): 1.