"windows and are not attached to the glass. (3) Signs, stickers, or other materials that are displayed in a ( )1 seven-inch square in the lower corner of the windshield farthest removed from the driver, signs, stickers, or other materials that are displayed in a ( )1 seven-inch square in the lower corner of the rear window farthest removed from the driver, or signs, stickers, or other materials tha" . . . .