a request for each specific project: Provided further , That prior to approving such grants, the Secretary shall certify that the Washington Metropolitan Area Transit Authority is making progress to improve its safety management system in response to the Federal Transit Administration’s 2015 safety management inspection: Provided further , That the Secretary shall determine that the Washington Metropolitan Area Transit Authority has placed the highest priority on those investments that will improve the safety of the system before approving such grants: Provided further , That the Secretary, in order to ensure safety throughout the rail system, may waive the requirements of section 601(e)(1) of division B of Public Law 110–432 . Administrative provisions—federal transit administration (Including rescission) 160. The limitations on obligations for the programs of the Federal Transit Administration shall not apply to any authority under 49 U.S.C. 5338 , previously made available for obligation, or to any other authority previously made available for obligation. 161. Notwithstanding any other provision of law, any funds appropriated before October 1, 2018, under any section of chapter 53 of title 49, United States Code, that remain available for expenditure, may be transferred to and administered under the most recent appropriation heading for any such section. 162. Of the unobligated amounts made available for fiscal years 2005 or prior fiscal years to Transit Formula Grants , a total of $46,560,000 is hereby permanently rescinded. 163. None of the funds made available under this Act may be used for the implementation or furtherance of new policies detailed in the Dear Colleague letter distributed by the Federal Transit Administration to capital investment grant program project sponsors on June 29, 2018. Saint lawrence seaway development corporation The Saint Lawrence Seaway Development Corporation is hereby authorized to make such expenditures, within the limits of funds and borrowing authority available to the