1. Updated or new motor vehicle safety standards for highly automated vehicles (a) Amendment Chapter 301 of subtitle VI of title 49, United States Code, is amended by inserting after section 30128 the following new section: 30129. Updated or new motor vehicle safety standards for highly automated vehicles (a) Safety assessment certification (1) Final Rule Not later than 24 months after the date of the enactment of this section, the Secretary of Transportation shall issue a final rule requiring the submission of safety assessment certifications regarding how safety is being addressed by each entity developing a highly automated vehicle or an automated driving system. Such rule shall include— (A) a specification of which entities are required to submit such certifications; (B) a clear description of the relevant test results, data, and other contents required to be submitted by such entity, in order to demonstrate that such entity’s vehicles are likely to maintain safety, and function as intended and contain fail safe features, to be included in such certifications; and (C) a specification of the circumstances under which such certifications are required to be updated or resubmitted. (2) Interim requirement Until the final rule issued under paragraph (1) takes effect, safety assessment letters shall be submitted to the National Highway Traffic Safety Administration as contemplated by the Federal Automated Vehicles Policy issued in September 2016, or any successor guidance issued on highly automated vehicles requiring a safety assessment letter. (3) Periodic review and updating Not later than 5 years after the date on which the final rule is issued under paragraph (1), and not less frequently than every 5 years thereafter, the Secretary shall— (A) review such rule