A method is provided for visualizing specified safety-critical information in a vehicle. First display data are (AD_1) are determined, which are representative of a first image (B1) to be visualized, which provides the specified safety-critical information in a specified first signalization form, the first display data (AD_1) being determined free of specified safety regulations. The first display data (AD_1) are sent to a display unit (DISP) of the vehicle and test data (DD) are read out, which are representative of an image visualized on the display unit (DISP). The test data (DD) are checked and, if the test data (DD) are representative of a faulty provision of the specified safety-critical information, second display data (AD_2) are sent to the display unit (DISP), which are representative of a second image (B2) to the visualized, which provides the specified safety critical information in a specified second signalization form, which differs from the first signalization form. The second display data (AD_2) are determined while complying with the specified safety regulations.