The "Train Crew Choice Act" aims to nullify a specific final rule issued by the Federal Railroad Administration (FRA) concerning train crew sizes. This legislation targets the FRA's "Train Crew Size Safety Requirements" rule, which was published in the Federal Register on April 9, 2024, under 89 Fed. Reg. 25052. If enacted, the bill would ensure that this particular federal regulation has no legal force or effect , effectively preventing its implementation. The primary impact would be to eliminate the federal mandate on minimum train crew sizes, leaving such decisions to other entities.