of trains longer than 7,500 feet (a) Study The Secretary of Transportation shall seek to enter into an agreement with the National Academies to conduct a study and issue 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 safety impacts of freight trains longer than 7,500 feet. (b) Contents The study conducted pursuant to subsection (a) shall include— (1) an examination of any potential risks of the operation of such trains and recommendations on mitigation of such risks