Intelligent Transportation Systems (ITS) increasingly rely on connectivity for efficient traffic management and enhanced user experience. The existing ITS solutions operate mainly within a 2D domain, thus missing the potential benefits of aerial platforms. This paper envisions 3D ITS by integrating aerial platforms, such as Unmanned Aerial Vehicles (UAVs), to simultaneously improve network coverage and support multi-modal transportation, including Advanced Air Mobility (AAM). Using stochastic models, we investigate how UAV-based Aerial Base Stations (ABSs) can address the limitations of traditional Terrestrial Base Stations (TBSs) by offering superior coverage, particularly in urban environments. Our results demonstrate that ABSs have 106.67% more coverage area than TBS, higher Signal-to-Noise Ratio (SNR) distribution, and are suitable for high-throughput ITS applications.

翻译：智能交通系统（ITS）日益依赖互联互通以实现高效的交通管理和提升用户体验。现有ITS解决方案主要在二维领域运行，因此未能充分利用空中平台的潜在优势。本文通过集成无人机（UAV）等空中平台，构建三维ITS体系，旨在同步提升网络覆盖能力并支持包括先进空中交通（AAM）在内的多模式交通系统。基于随机模型，我们研究了基于无人机的空中基站（ABS）如何通过提供更优的覆盖性能（特别是在城市环境中）来弥补传统地面基站（TBS）的局限性。研究结果表明：ABS的覆盖范围比TBS提升106.67%，具有更高的信噪比（SNR）分布特性，适用于高吞吐量ITS应用场景。