Abstract: A system for comparing a head position of a passenger of a motor vehicle, determined with the aid of a determination unit, with a reference measurement. The system includes at least one marking element which has at least one marking and is able to be fastened to the head of the passenger, and at least one movement detection element for detecting the position of the at least one marking of the marking element for the reference measurement.

Abstract: A system for comparing a head position of a passenger of a motor vehicle, determined with the aid of a determination unit, with a reference measurement. The system includes at least one marking element which has at least one marking and is able to be fastened to the head of the passenger, and at least one movement detection element for detecting the position of the at least one marking of the marking element for the reference measurement.

Abstract: A method and a device for determining a reaction time of a vehicle driver of a vehicle includes a display device displaying at least one visual stimulus; and processing circuitry using a view recognition device to observe the direction of view of the vehicle driver, and determining the reaction time starting from the displaying of the visual stimulus, the reaction time corresponding to a specified time span if the direction of view of the vehicle driver is not recognized within the specified time span as running in the direction of the visual stimulus, or the reaction time corresponding to a time span in which the direction of view of the vehicle driver is recognized within the specified time span as running in the direction of the visual stimulus.

Abstract: A method is provided for operating an activatable locking device for a door and/or a window of a vehicle, in particular of a motor vehicle, the method including the following steps: detecting a person located in the vehicle and the person's position with respect to the door and/or the displaceable window in the vehicle, ascertaining at least one biometric feature of the person indicative of the age, checking, on the basis of the at least one ascertained biometric feature, whether the person falls below a specifiable limit age, and activating the locking device if the person falls below the specifiable limit age and the position of the person is at the door and/or the displaceable window.

Abstract: A method is provided for operating an activatable locking device for a door and/or a window of a vehicle, in particular of a motor vehicle, the method including the following steps: detecting a person located in the vehicle and the person's position with respect to the door and/or the displaceable window in the vehicle, ascertaining at least one biometric feature of the person indicative of the age, checking, on the basis of the at least one ascertained biometric feature, whether the person falls below a specifiable limit age, and activating the locking device if the person falls below the specifiable limit age and the position of the person is at the door and/or the displaceable window.

Abstract: A method and a device for determining a reaction time of a vehicle driver of a vehicle includes a display device displaying at least one visual stimulus; and processing circuitry using a view recognition device to observe the direction of view of the vehicle driver, and determining the reaction time starting from the displaying of the visual stimulus, the reaction time corresponding to a specified time span if the direction of view of the vehicle driver is not recognized within the specified time span as running in the direction of the visual stimulus, or the reaction time corresponding to a time span in which the direction of view of the vehicle driver is recognized within the specified time span as running in the direction of the visual stimulus.

Abstract: A traffic warning apparatus for a vehicle for warning traffic participants about a hazard region, having a sensor device that is embodied to sense a directional change of the vehicle, having an evaluation device that is embodied to identify a hazard region that ensues for other traffic participants as a result of the directional change of the vehicle, having a visualization device, mounted on the vehicle, that is embodied to visualize the hazard region for other traffic participants outside the vehicle. Also described is a traffic warning method for warning traffic participants about a hazard region.