A remote-controlled mobile triangle sign includes a triangle sign having at least one surface with a reflective area; a remote controller configured to transmit control signals; and a remote-controlled car. These vision aids may be beneficial for individuals with low-vision disorders such as age-related macular degeneration, retinitis pigmentosa, and other visual disorders. The conductive section and the elastic section of the level bridge are embodied in one piece. Length of the initial playlist is configurable.