under both this heading and the National Network Grants to the National Railroad Passenger Corporation heading to fund the costs of project management and oversight of activities authorized by section 11101(c) of division A of Public Law 114–94 : Provided further , That in addition to the project management oversight funds authorized under section 11101(c) of division A of Public Law 114–94 , the Secretary may retain up to an additional $5,000,000 of the funds provided under this heading to fund expenses associated with the Northeast Corridor Commission established under section 24905 of title 49, United States Code: Provided further , That of the amounts made available under this heading and the National Network Grants to the National Railroad Passenger Corporation heading, not less than $50,000,000 shall be made available to bring Amtrak-served facilities and stations into compliance with the Americans with Disabilities Act. National network grants to the national railroad passenger corporation To enable the Secretary of Transportation to make grants to the National Railroad Passenger Corporation for activities associated with the National Network as authorized by section 11101(b) of the Fixing America’s Surface Transportation Act (division A of Public Law 114–94 ), $1,291,600,000, to remain available until expended: Provided , That the Secretary may retain up to an additional $2,000,000 of the funds provided under this heading to fund expenses associated with the State-Supported Route Committee established under section 24712 of title 49, United States Code: Provided further , That at least $50,000,000 of the amount provided under this heading shall be available for the development, installation and operation of railroad safety technology, including the implementation of a positive train control system, on State-supported routes as defined under section 24102(13) of title 49, United States Code, on which positive train control systems are not required by law or regulation. Administrative provisions—federal