; (B) in paragraph (1), by striking the semicolon at the end and inserting ; and ; (C) by striking paragraph (2); and (D) by redesignating paragraph (3) as paragraph (2); (2) by striking subsection (b); and (3) by amending subsection (c) to read as follows: (c) Exemptions The Secretary shall exempt railroad carriers and railroad carrier contractors and subcontractors, or the employees thereof, from any training standard, curriculum, or ongoing criteria, testing, or skills evaluation measure, or any other requirement under this section if— (1) the Secretary makes a reasoned determination that the benefits do not justify the costs of such requirement; (2) there is insufficient supporting information to support the need for such requirement; or (3) the Secretary has issued other training regulations covering the same subject or designed to achieve the same objective. . (b) Regulations Not later than 3 years after the date of enactment of this Act, the Secretary shall revise the regulations under part 243 of title 49, Code of Federal Regulations, to reduce the burden on railroad carriers, railroad carrier contractors and subcontractors, and employees thereof in accordance with section 20162, as amended by subsection (a) of this section. (c) Effective date The regulations under part 243 of title 49, Code of Federal Regulations, shall not be in effect before the date that is 30 days after the date of publication of the final rule required by subsection (b). (d) Savings clause Nothing in this section, or the amendments made by this section, may be construed to affect part 214 or 232 of title 49, Code of Federal Regulations, as revised by the final rule, Training, Qualification, and Oversight for Safety-Related Railroad Employees (79 Fed. Reg. 66459). 223. Assessments Section 20156 is amended— (1) in subsection (a)(1)— (A) by striking Not later than 4 years after the date of enactment of the Rail Safety Improvement Act of 2008, the and inserting The