The date of enactment of the Passenger Rail Expansion and Rail Safety Act of 2021, referred to in subsecs. (d)(1) and (e)(1), is the date of enactment of title II of div. B of Pub. L. 117–58, which was approved Nov. 15, 2021.

The date of enactment of the FAST Act, referred in subsec. (e), is the date of enactment of Pub. L. 114–94, which was approved Dec. 4, 2015.