$568,000,000 shall be available for projects authorized under section 5309(h) of title 49, United States Code, and $100,000,000 shall be available for projects authorized under section 3005(b) of the Fixing America's Surface Transportation Act: Provided further , That the Secretary shall continue to administer the capital investment grants program in accordance with the procedural and substantive requirements of section 5309 of title 49, United States Code, and of section 3005(b) of the Fixing America's Surface Transportation Act. Grants to the washington metropolitan area transit authority For grants to the Washington Metropolitan Area Transit Authority as authorized under section 601 of division B of 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 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