Transportation Department, Federal Railroad Administration
FRA proposes to amend its locomotive safety regulations to expand the maximum permitted variation in diameter for locomotive wheel sets using alternating current technology, in response to a Class I railroad's May 2019 petition for rulemaking and innovations in traction motor control.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation Federal Railroad Administration 49 CFR Part 229 [Docket No. FRA-2025-0126] RIN 2130-AD50 AGENCY: Federal Railroad Administration (FRA), Department of Transportation (DOT). ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: FRA proposes to amend its locomotive safety regulations to expand the maximum permitted variation in diameter for locomotive wheel sets using alternating current technology, in response to a Class I railroad's May 2019 petition for rulemaking and innovations in traction motor control. DATES: Comments on the proposed rule must be received by September 2, 2025. FRA may consider comments received after that date, but only to the extent practicable. ADDRESSES: Comments: Comments related to Docket No. FRA-2025-0126 may be submitted by going to https://www.regulations.gov and following the online instructions for submitting comments. Instructions: All submissions must include the agency name, docket number (FRA-2025-0126), and Regulatory Identification Number (RIN) for this rulemaking (2130-AD50). All comments received will be posted without change to https://www.regulations.gov ; this includes any personal information. Please see the Privacy Act heading in the SUPPLEMENTARY INFORMATION section of this document for Privacy Act information related to any submitted comments or materials. Docket: For access to the docket to read background documents or comments received, go to https://www.regulations.gov and follow the online instruc…
Other Federal Register documents from the same docket.
Citation: 90 FR 28658
