Method for collectively depicting safety-critical and non-safety-critical information on a display unit of a vehicle, comprising: receiving non-safety-critical information and producing at least one graphical presentation of the non-safety-critical information; receiving safety-critical information and producing at least one graphical presentation of the safety-critical information; depicting the presentations of safety-critical and non-safety-critical information on the display unit, wherein the depiction has at least two depiction planes; wherein the presentation of the non-safety-critical information is depicted on a posterior instance of the at least two depiction planes in the line of vision of the observer and the presentation of the safety-critical information is depicted on an anterior depiction plane; and creating an overall image from the posterior depiction plane with the presentation of the non-safety-critical information and the anterior depiction plane with the presentation of the safety-critical information; checking the overall image, during depiction of the safety-critical information, for images that have appeared; ensuring the discernibility of the presentation of the safety-critical information by image checking, wherein each individual image in an image stream to be displayed is checked; checking the area in which the safety-critical information is supposed to be depicted for contrasts and/or brightnesses; wherein a check is performed to determine whether the safety-critical information is discernible if the presentation of the non-safety-critical information is at least partially overlapped by the presentation of the safety-critical information; wherein, if the check establishes that the presentation of the non-safety critical information is overlapped by the presentation of the safety-critical information, at least the overlapping portions of the presentation of the safety-critical information are adapted such that the safety-critical information is discernible. receiving non-safety-critical information and producing at least one graphical presentation of the non-safety-critical information; receiving safety-critical information and producing at least one graphical presentation of the safety-critical information; depicting the presentations of safety-critical and non-safety-critical information on the display unit, wherein the depiction has at least two depiction planes; wherein the presentation of the non-safety-critical information is depicted on a posterior instance of the at least two depiction planes in the line of vision of the observer and the presentation of the safety-critical information is depicted on an anterior depiction plane; and creating an overall image from the posterior depiction plane with the presentation of the non-safety-critical information and the anterior depiction plane with the presentation of the safety-critical information; checking the overall image, during depiction of the safety-critical information, for images that have appeared; ensuring the discernibility of the presentation of the safety-critical information by image checking, wherein each individual image in an image stream to be displayed is checked; checking the area in which the safety-critical information is supposed to be depicted for contrasts and/or brightnesses; wherein a check is performed to determine whether the safety-critical information is discernible if the presentation of the non-safety-critical information is at least partially overlapped by the presentation of the safety-critical information; wherein, if the check establishes that the presentation of the non-safety critical information is overlapped by the presentation of the safety-critical information, at least the overlapping portions of the presentation of the safety-critical information are adapted such that the safety-critical information is discernible.