; and (B) by inserting Class II before railroad carrier that has inadequate safety performance ; and (2) by adding at the end the following: (i) Class III railroad carriers The Secretary may require a railroad carrier that is a Class III railroad and that has an inadequate safety performance (as determined by the Secretary) to conduct a safety assessment, including a safety assessment conducted under a grant made by the Secretary to a private or nonprofit organization involved in or affiliated with transportation by a Class II railroad or Class III railroad for research, development, evaluation, and training efforts, to enhance rail safety practices and safety culture. (j) Necessary improvements (1) In general For each railroad carrier described in paragraph (2), the Secretary shall define the criteria the railroad carrier must meet in order to demonstrate that it has adequate safety performance. (2) Railroad carriers described A railroad carrier described in this paragraph is— (A) a Class II railroad or a Class III railroad; and (B) has inadequate safety performance (as determined by the Secretary). (k) Rule of construction Subsection (a), and the components of the program required under that subsection, shall not apply to a railroad carrier that is a Class III railroad. . 224. Miscellaneous authority Section 24305(c)(4) is amended by inserting subject to section 24321, before provide food . 225. Applicability to States Not later than 180 days after the date of the enactment of this Act, the Secretary shall revise part 270 of title 49, Code of Federal Regulations, to exclude a State, or a political subdivision of a State, that provides equipment, track, right-of-way, or financial support for intercity passenger service pursuant to section 209 of the Passenger Rail Investment and Improvement Act of 2008 (division B of Public Law 110–432