Federal Motor Vehicle Safety Standards; Modernization of FMVSS No. 135 To Accommodate ADS-Equipped Vehicles
Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register June 26, 2026. Document 2026-12981. Updated Nov. 9, 2026.
- What it does
NHTSA is proposing to amend Federal Motor Vehicle Safety Standard (FMVSS) No. 135, "Light vehicle brake systems." The proposed modifications would distinguish how regulations apply to vehicles with and without manually operated driving controls. The proposed modifications would clarify definitions, telltale requirements, performance requirements, and test procedures in the standard and remove sections that are no longer relevant. The stopping distance performance requirements, which address the primary safety purpose of the standard, would still apply to all subject vehicles. This rulemaking would remove unnecessary regulatory burdens and costs without detriment to vehicle safety.
The National Highway Traffic Safety Administration's summary, as published in the Federal Register.
- What it would change
1 part of Title 49 of the Code of Federal Regulations:
- Before this
No earlier Federal Register document under regulation identifier 2127-AN00 since Jan. 1, 2025.
Since then:
- What happens next and when
Comments should be submitted no later than July 27, 2026.
The agency's dates, word for word.
The record as published
| Document number | 2026-12981 |
|---|---|
| Action | Notice of proposed rulemaking. |
| Agencies | Transportation Department; National Highway Traffic Safety Administration |
| Published | June 26, 2026 |
| Comments close | July 27, 2026 |
| Regulation identifier (RIN) | 2127-AN00 |
| Docket | NHTSA-2026-0728 |
Source: the Federal Register (public domain). The document in the Federal Register