Amtrak shall establish and maintain internal controls to ensure Amtrak’s costs, revenues, and other compensation are appropriately allocated to the Northeast Corridor, including train services or infrastructure, or the National Network, including proportional shares of common and fixed costs.

Nothing in this section shall be construed to limit the ability of Amtrak to enter into an agreement with 1 or more States to allocate operating and capital costs under section 209 of the Passenger Rail Investment and Improvement Act of 2008 (49 U.S.C. 24101 note).

Notwithstanding section 24102, for purposes of this section, the term “Northeast Corridor” means the Northeast Corridor main line between Boston, Massachusetts, and the District of Columbia, and facilities and services used to operate and maintain that line.