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 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 ‘‘Fixed Guideway Capital Investment’’ of the Federal Transit Administration for projects specified in this Act or identified in reports accompanying this Act not obligated by September 30, 2022, 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, 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. 163. (a) Except as provided in subsection (b), none of the funds in this or any other Act may be available to advance in any way a new light or heavy rail project towards a full funding grant agreement as defined by 49 U.S.C. 5309 for the Metropolitan Transit Authority of Harris County, Texas if the proposed capital project is constructed on or planned to be constructed on Richmond Avenue west of South Shepherd Drive or on Post Oak Boulevard north of Richmond Avenue in Houston,