Conveyance vehicle system

A conveyance vehicle system that achieves an increased efficiency of loading an article from a conveyance vehicle into a loading opening of an automated warehouse, includes a stocker, a conveyance vehicle, and a conveyance vehicle controller. The stocker includes racks, a loading port, and a stocker controller. The conveyance vehicle loads an article into the loading port of the stocker. The conveyance vehicle controller assigns the conveyance vehicle with an article conveyance command to convey the article to the stocker. The stocker controller receives a predicted conveyance command before the article is loaded from the conveyance vehicle into the stocker. The predicted conveyance command includes ID information of the article and information indicating whether or not the article is to be loaded into a rack.