Not later than 2 years after the date of enactment of this Act, the Secretary of Transportation shall complete research into the development of updated motor vehicle safety standards or performance requirements for motor vehicle headlamps that would improve the performance of headlamps and improve overall safety. (b) Rulemaking or report (1) Rulemaking After the completion of the research required by subsection (a), the Secretary shall initiate a rulemaking proceeding to revise the motor vehicle safety standards regarding headlamps if the Secretary determines that a revision of the standards meets the requirements and considerations set forth in subsections (a) and (b) of section 30111 of title 49, United States Code. (2) Report If the Secretary determines that a revision to the standard described in paragraph (1) does not meet the requirements and considerations set forth in such subsections, the Secretary shall submit a report describing the reasons for not revising the standard to the Committee on Energy and Commerce of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate.