Abstract: The traveling unit main body and the accommodation unit are adapted to be uncoupled and re-coupled. The traveling unit main body includes a first driving unit and a second driving unit configured to perform at least one of operations of taking out or storing the article from or in the accommodation unit and transporting the article taken out from the accommodation unit. The traveling unit main body performs at least one of the operations of taking out, storing, and transporting the article using the first driving unit and the second driving unit in a state in which the traveling unit main body and the accommodation unit are uncoupled.

Abstract: The plurality of passage areas include a first passage area and a second passage area, the first passage area being a passage area for which a traveling condition for a transportation vehicle carrying an object to be transported is specified, and a second passage area being a passage area for which a traveling condition for restricting traveling of the transportation vehicle more strictly than in the first passage area is specified. The traffic management system includes a traffic management unit configured to change a regulation in at least a part of the second passage area in regard to the permission/prohibition of the traveling of the transportation vehicle based on at least one of information about a demand for the object to be transported and information about a traffic environment.

Abstract: A first exemplary aspect is a delivery shelf includes: a housing; and a plurality of pairs of supports extended inside the housing in a depth direction thereof and arranged inside the housing at regular intervals in a height direction thereof. The delivery shelf is capable of housing all of returnable containers for delivery of a plurality of predefined sizes along the plurality of respective pairs of supports, and is installed in a house.