that the new definition does not meet the need for motor vehicle safety, or is otherwise inconsistent with the purposes of chapter 301 of title 49, United States Code. If the Secretary so notifies SAE International (or its successor organization), the existing definition in paragraph (1) shall remain in effect. (B) Conforming amendments If the Secretary does not reject a definition revised by SAE International (or its successor organization) as described in subparagraph (A), the Secretary shall promptly make any conforming amendments to the regulations and standards of the Secretary that are necessary. The revised definition shall apply for purposes of this section. The requirements of section 553 of title 5, United States Code, shall not apply to the making of any such conforming amendments. (C) Updates by Secretary Pursuant to section 553 of title 5, United States Code, the Secretary may update any of the definitions in subparagraph (A), (B), or (H) of paragraph (1) if the Secretary determines that materially changed circumstances regarding highly automated vehicles have impacted motor vehicle safety such that the definitions need to be updated to reflect such circumstances. (i) Authorization of appropriations There are authorized to be appropriated to carry out this section $31,500,000, of which not more than 5 percent shall be available for administrative costs, for fiscal year 2019.