Vehicle running state, on the basis of the vehicle condition and the subject vehicle surrounding conditions, it is estimated the resulting candidates that may be caused by the passenger of the psychosomatic state, the changing tendency of the occupant of the biological information after presenting the resulting candidates the driver , it analyzes whether mental and physical state of the occupant is improved by improvement action.自車の走行状態、車内状態および自車周辺の状況に基づいて、乗員の心身状態の起因となり得る起因候補を推測し、起因候補を運転者に提示した後の乗員の生体情報の変化傾向から、改善行動によって当該乗員の心身状態が改善しているか否かを分析する。
