Improvement Act of 2008 ( Public Law 110–432 ), $150,000,000, to remain available until expended: Provided, That the Secretary of Transportation shall approve grants for capital and preventive maintenance expenditures for the Washington Metropolitan Area Transit Authority only after receiving and reviewing a request for each specific project: 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. ADMINISTRATIVE PROVISIONS—FEDERAL TRANSIT ADMINISTRATION (INCLUDING RESCISSION) (INCLUDING TRANSFER OF FUNDS) 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, funds appropriated or limited by this Act under the heading Capital Investment Grants of the Federal Transit Administration for projects specified in this Act not obligated by September 30, 2027, and other recoveries, shall be directed to projects eligible to use the funds for the purposes for which they were originally provided. 162. Notwithstanding any other provision of law, any funds appropriated before October 1, 2023, 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. 163. None of the funds made available by this Act or any other Act shall be used to adjust apportionments or withhold funds from apportionments pursuant to section 9503(e)(4) of the Internal Revenue Code of 1986 ( 26 U.S.C. 9503(e)(4) ). 164. None of the funds made available by this Act or any other Act shall be used to impede or hinder project advancement or approval for any project seeking a Federal