PROBLEM TO BE SOLVED: To determine the state of a driver by comprehensively observing the state of the driver while reducing a processing load.SOLUTION: A driver state determination device (10) including first driver state determination means (12) for detecting a first state of a driver and second driver state determination means (14) for detecting a second state of the driver actuates the second driver state determination means (14) when a value indicating the first state is equal to or more than a first threshold value.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】処理負荷を低減しつつ、運転者の状態を総合的に観察して運転者の状態を判定する。【解決手段】運転者の第１状態を検出する第１運転者状態検出手段（１２）と、運転者の第２状態を検出する第２運転者状態検出手段（１４）と、を備える運転者状態判定装置（１０）は、第１状態を示す値が第１閾値以上の場合に、第２運転者状態検出手段（１４）を作動させる。【選択図】図１
