A remote controller includes: an acquisition unit; a detection unit; a control value generation unit; and a transmission unit. The control value generation unit generates a retreat control value if at least either one of a first case and a second case applies. The first case includes two or more moving objects overlapping each other in the sensor information. The second case includes establishing an expectation before sensor information acquisition that the two or more moving objects overlap each other when the sensor information is acquired. The retreat control value defines the running motion of at least any of the moving objects establishing a locational relationship allowing a detection subject moving object of the moving objects as a subject of detection using the sensor information to be detected by the detection unit without causing an overlap of the detection subject moving object with a different one of the moving objects.