Expanding Certain Locomotive Wheel Set Diameter Variations
Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Aug. 31, 2026. Document 2026-17788. Updated Nov. 6, 2026.
- What it does
This rule amends FRA's 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.
The Federal Railroad Administration's summary, as published in the Federal Register.
- What changed in the regulation
1 part of Title 49 of the Code of Federal Regulations:
Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).
- Compared with
The Federal Railroad Administration has published 23 final rules in 2026 so far, compared with 37 in all of 2025.
Counted by the Tribune from Federal Register records since Jan. 1, 2025.
- Before this
1 earlier Federal Register document under regulation identifier 2130-AD50 since Jan. 1, 2025.
- What happens next and when
This rule is effective September 30, 2026.
The agency's dates, word for word.
The record as published
| Document number | 2026-17788 |
|---|---|
| Action | Final rule. |
| Agencies | Transportation Department; Federal Railroad Administration |
| Published | Aug. 31, 2026 |
| Effective date | Sept. 30, 2026 |
| Regulation identifier (RIN) | 2130-AD50 |
| Docket | FRA-2025-0126 |
Source: the Federal Register (public domain). The document in the Federal Register