“…In recent years, along with the rapid development of advanced technologies, e.g., the internet of things (IoT), big data (BD), and artificial intelligence (AI), [1], various emerging services and devices applied in the field of transportation, e.g., autonomous vehicles for vehicle to everything [2][3][4], e-scooter with ride-sharing [5], to support the upgrade of transportation systems (TS) by elevating their level of automation and intelligence [6]. Accordingly, a novel form of modern TS, named autonomous TS (ATS) [7], is being enlightened. Compared to past conventional TS (CTS) and present intelligent TS (ITS) [8], ATS can manage diversified demands and automatized supplies through a self-actuating cycle consisting of sensing, learning, rearranging, and reacting steps, further improving the safety, reliability, convenience, efficiency, and sustainability of TS [7].…”