The general rule is no hats, caps, scarves, helmets or the like for the required “head and shoulder, full-faced color photograph.” But the law allows for “the wearing of religious head dressings” that do “not cover any area of the open face,” so long as “the driver signs a declaration stating that, in observation of a religious conviction, he or she wears the head dressing at all times when in public, unless circumstances" — such as a medical emergency or a visit to the barber — "require the removal of the head dressing.”