; and (4) in subsection (c) by inserting or subsection (d)(2) after subsection (b) . 6. Report Not later than 18 months after the date of enactment of this Act, the Federal Railroad Administration and Amtrak shall submit to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate a report on the progress of the implementation of the safety recommendations described in section 3, including a description of all completed elements of the implementation.