Abstract: A method for recognizing microsleep on the part of a driver of a vehicle. The method includes at least a step of reading in an eye closure information item regarding an eye parameter of the driver, the eye closure information item representing a first eyelid position for a maximum eye opening level, and/or a second eyelid position for a minimum eye opening level, for the driver; a step of classifying a current eyelid position of an eyelid of the driver using the eye closure information item, in order to obtain an eye opening information item that represents an open state of the eyes or a closed state of the eyes; and a step of ascertaining a sleep recognition value that represents an indication of an occurrence of microsleep.

Abstract: A method for determining a drowsiness value that represents the drowsiness of a driver of a motor vehicle and is determined cyclically over defined time intervals on the basis of at least one drowsiness characteristic, includes the task of determining a drowsiness value of a time interval to be assessed, in addition to the drowsiness characteristic, at least one drowsiness base value is taken into account.

Abstract: A method for furnishing a warning signal of a detected imminent microsleep event includes reading in at least one behavior pattern that represents a behavior of a driver while driving the vehicle, comparing the behavior pattern with at least one stored pre-microsleep pattern that represents an individual behavior that has taken place or is taking place prior to a microsleep event on the part of the driver, and outputting the warning signal if a predetermined relationship exists between the behavior pattern and the pre-microsleep pattern.

Abstract: A method for determining a drowsiness value that represents the drowsiness of a driver of a motor vehicle and is determined cyclically over defined time intervals on the basis of at least one drowsiness characteristic, includes the task of determining a drowsiness value of a time interval to be assessed, in addition to the drowsiness characteristic, at least one drowsiness base value is taken into account.

Abstract: A method for providing a reference level for an eye-opening width, the eye-opening width representing an instantaneously detected distance between the eyelids of an eye, the method having an ascertainment step, in which the reference level is ascertained using values of the eye-opening width, where the eye-opening width is greater than a limiting value.

Abstract: A method for operating a motor vehicle which drives or is able to be driven at least partially automatically includes: detecting a gaze direction of a driver of the motor vehicle; inferring a driver distraction if the detected gaze direction deviates from a setpoint gaze direction beyond a predefinable measure; monitoring the driver for a secondary activity if a distracted driver was detected; and ascertaining a time period that the driver would require to take over the at least partial control of the motor vehicle, as a function of a detected secondary activity.

Abstract: A method and a device for ascertaining a fatigue degree of a driver of a vehicle, and to a vehicle, includes a driver-specific ascertainment of a change in the fatigue degree, and ascertaining the fatigue degree based on a previous fatigue degree, which is ascertained utilizing a driver-related circadian rhythm and the ascertained change in the fatigue degree. The method includes the ascertainment of the previous fatigue degree based on data about the driver in a time period during which the driver is not driving the vehicle.

Abstract: A method for interactive attentiveness enhancement of a vehicle driver includes steps of determining that a driver assistance function for semiautomatic control of the motor vehicle is active, detecting a stimulus which may be experienced by the vehicle driver upon an observation of the surroundings of the motor vehicle, detecting an input of the vehicle driver in response to the stimulus, determining a game result based on the input and the stimulus, and outputting a notice concerning the game result.

Abstract: A method for interactive attentiveness enhancement of a vehicle driver includes steps of determining that a driver assistance function for semiautomatic control of the motor vehicle is active, detecting a stimulus which may be experienced by the vehicle driver upon an observation of the surroundings of the motor vehicle, detecting an input of the vehicle driver in response to the stimulus, determining a game result based on the input and the stimulus, and outputting a notice concerning the game result.

Abstract: A method for changing a light emission of at least one headlight of a vehicle. The method includes reading in a position signal which represents a position of the object in front of or alongside the vehicle. The method also includes changing the light emission from at least one headlight of the vehicle onto the object or into the surroundings of the object, using the position signal. For the change, a changing illumination pattern is emitted onto the object or into the surroundings of the object in order to change the light emission of the at least one headlight of the vehicle.

Abstract: A device for active wheel alignment of wheels arranged on a wheel axle of a motor vehicle includes two hydraulic body dampers arranged between a vehicle body and the wheel axle. Each body damper is configured as a differential cylinder having a cylinder and a dividing piston which is guided in the cylinder. A throttle is arranged outside the cylinder of the body damper. Operably connected with the body dampers via hydraulic lines is a hydraulic servo unit, wherein hydraulic fluid is transferable via the throttle from one side of the dividing piston to the servo unit and from the servo unit via a returning one of the hydraulic lines back to another side of the dividing piston.

Abstract: A device for active wheel alignment of wheels arranged on a wheel axle of a motor vehicle includes two hydraulic body dampers arranged between a vehicle body and the wheel axle. Each body damper is configured as a differential cylinder having a cylinder and a dividing piston which is guided in the cylinder. A throttle is arranged outside the cylinder of the body damper. Operably connected with the body dampers via hydraulic lines is a hydraulic servo unit, wherein hydraulic fluid is transferable via the throttle from one side of the dividing piston to the servo unit and from the servo unit via a returning one of the hydraulic lines back to another side of the dividing piston.