The date of enactment of the FAST Act, referred to in subsec. (c)(1)(C), is the date of enactment of Pub. L. 114–94, which was approved Dec. 4, 2015.

The date of enactment of the Surface Transportation Reauthorization Act of 2021, referred to in subsec. (d)(1), is the date of enactment of div. A of Pub. L. 117–58, which was approved Nov. 15, 2021.

Section effective Oct. 1, 2021, see section 10003 of Pub. L. 117–58, set out as an Effective Date of 2021 Amendment note under section 101 of this title.