“…Another distinct track of surveys is concerned with the development and review of theoretical models and solution techniques about UAV routing optimization, potentially under collaboration with trucks, i.e., the so-called truck-drone routing problem, see, e.g., [25], [26], [27], [28], [30], [32], [33], [34], [35], [36], [37], and [38]. Apart from the focus on optimization, socio-technical considerations and challenges for drone applications are investigated as well [39], [40], [41], [42], [43]. Given our dissection of comprehensive surveys on drone applications in logistics / cargo delivery, we summarize the following directions for future research:…”