13A Any change to a word message sign that can be considered more than a minor modification (see Section 1A.03) shall be approved by the New York State Department of Transportation before it is implemented.

17A Where it is deemed necessary to identify the regulating authority, regulatory signs may bear the authority's name, initials, or symbol.

17B Where used on regulatory signs, the regulatory authority name or symbol shall not be more than one-half inch high, and shall be located near the bottom of the sign.