Acknowledgements
I would like to thank members of the project “Research into the development of a traffic flow estimation system for the purpose of understanding tourism flows” (Ministry of Land Infrastructure, Transport and Tourism of Japan “CART” scheme) as well as of the project “Tourists’ Flow Patterns Identification and Information Provision for Safe Evacuation” (Japan Science and Technology Corporation, grant number JPMJSC1805) for various discussions that have stimulated this editorial. In particular to mention are Nobuhiro Uno, Junji Nishida, Fumitaka Kurauchi, Toshiyuki Nakamura, as well as Yuval Hadas.