Abstract: A camera and a laser radar are attached to the hoist of an overhead crane. Image data and three-dimensional point clouds are acquired during operation and accumulated as operation result data. An information processing apparatus displays the crane's movement trajectory on the terminal and predicts maintenance timing based on operation result data, evaluates a degree of danger and detects an occurrence of accident based on a positional relationship between the crane and an operator, performs optimization of a movement path, a transport sequence of multiple suspended loads, a layout in the facility, and the like, and performs post-operation diagnosis for the degree of danger and operation efficiency of the crane. In addition, the crane is used to scan the inside of the facility to detect abnormalities such as fires and suspicious persons after the work hours of the facility. These treatments can improve the usefulness of the crane.