Dear Colleagues,

The aim of this Special Issue is to provide researchers in the field of air transport and multimodal transport with a place to share their ideas and results about their latest research and developments. The addressed topic has been of relevant importance in recent years, given the increasing attention that is devoted to sustainability aspects in aviation and to the emerging need to achieve multimodality in transportation by integrating the vertical dimension with the horizontal one in particular in urban and peri-urban environments. The topic, therefore, also includes new concepts of urban air mobility (UAM), advanced air mobility (AAM), unmanned traffic management (UTM), and U-space, which are emerging as new perspective paradigms for transport and flying traffic management in future cities, which in turn will have to implement proper actions to adapt their urban structure to host new infrastructure, enabling new mobility forms, both on the surface and in the air.

The research community is considering new technologies and concepts regarding the implementation of seamless door-to-door travel, which requires the implementation of fully integrated intermodal transport systems, allowing passengers an easy and seamless transfer between different transport modes, where air traffic management (ATM) and air transport can play a fundamental role. In this framework, the new paradigm from the ATM perspective is one of shifting from the optimization of the air segment of the journey to the optimization of the overall journey, including not only the air segment but also the surface and even water transport segments.

Through such a new global optimization paradigm, it will be possible to increase the efficiency of the overall transport chain by improving the interoperability of the different modes of transport while at the same time increasing environmental, social, and economic sustainability, whose complementary implications are of the utmost importance today and will become more and more fundamental in the future, making more efficient use of existing and future infrastructure.

To be more precise, the topics covered in this Special Issue include (but are not limited to) the following: air traffic management (ATM), advanced air mobility (AAM), unmanned traffic management (UTM) and U-space, urban air mobility (UAM), sustainability in transportation, multimodal transport, integrated transport services, digitalisation in multimodal transport management, data sharing in multimodal transport, automation in vertical and surface transport vehicles, algorithmic governance, and new paradigms and infrastructure in air, rail, and water transport.

Dr. Vittorio Di Vito
Guest Editor

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• air traffic management (ATM)
• door-to-door transport
• urban air mobility (UAM)
• advanced air mobility (AAM)
• unmanned traffic management (UTM)
• U-space
• multimodal transport concept of operations (ConOps)
• intermodal transport
• passenger experience
• journey optimization
• air transport
• surface transport
• rail transport
• water transport

• Sustainability in Air Transport and Multimodality in Sustainability (8 articles)