Within 120 days after it receives notice of such a revision by the American National Standards Institute, the Commission shall issue a notice of proposed rulemaking in accordance with section
553 of title
5 to amend the product safety standard for all-terrain vehicles to include any such revision that the Commission determines is reasonably related to the safe performance of all-terrain vehicles, and notify the Institute of any provision it has determined not to be so related. The Commission shall promulgate an amendment to the standard for all-terrain vehicles within 180 days after the date on which the notice of proposed rulemaking for the amendment is published in the Federal Register.