Materials Safety Administration shall issue a final rule relating to the notice of proposed rulemaking issued on July 29, 2016, entitled Hazardous Materials: Oil Spill Response Plans and Information Sharing for High-Hazard Flammable Trains (81 Fed. Reg. 50067). 4. Track safety specialists There are authorized to be appropriated such sums as may be necessary for the Administrator of the Federal Railroad Administration to hire a minimum of 2 additional track safety specialists per region. 5. Study on the adequacy of certain track inspections and regulations Not later than 180 days after the date of enactment of this Act, the Secretary of Transportation shall transmit to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate— (1) an assessment of the adequacy of— (A) railroad track inspections, including the frequency of inspections