Zur Müdigkeitserkennung eines Fahrers eines Fahrzeugs (10) werden automatisch die Müdigkeitserkennung beeinflussende Daten von einem Mobilgerät (20) an das Fahrzeug (10) übertragen, sobald das Mobilgerät (20) mit dem Fahrzeug (10) kommunikationsmäßig gekoppelt wird.The tiredness detection method involves transferring automatically detected tiredness affecting data from a mobile device (20) to the vehicle (10), when the mobile terminal is communicatively coupled to the vehicle. The warning settings are provided in vehicle such that driver is warned, when current tiredness level of the driver is greater than predetermined threshold level. Independent claims are included for the following: (1) mobile equipment for detecting tiredness of driver of vehicle (2) device for detecting tiredness of driver of vehicle and (3) vehicle.