Federal Motor Vehicle Safety Standards; Modernization of FMVSS No. 108 To Accommodate ADS-Equipped Vehicles

Open for public comment until Nov. 25, 2026. Comment on Regulations.gov

What it does

NHTSA is proposing to amend Federal Motor Vehicle Safety Standard (FMVSS) No. 108, "Lamps, reflective devices, and associated equipment." The proposed updates to the standard are intended to remove unnecessary requirements and to provide design flexibility without impact on vehicle safety. The first two proposed changes would amend the test voltage specification for integral beam type headlamps and remove requirements that apply to vertical headlamp arrangements. Further proposed changes address vehicles equipped with Automated Driving Systems (ADS) that do not have manually operated driving controls. Those modifications would limit the application of certain requirements for manually operated turn signal, hazard warning signal, and beam switching controls to vehicles with manually operated driving controls. The changes are intended to address regulatory burdens and costs associated with equipment that does not fulfill the same purpose or provide safety benefits in an ADS-equipped vehicle without manually operated driving controls as in a vehicle with such controls. The changes would also narrow certain requirements for telltales to vehicles with manually operated driving controls and incorporate the term "telltale" where appropriate throughout the standard. Finally, a proposed addition to the standard would allow cyan-colored ADS marker lamps as optional motor vehicle lighting equipment in ADS-equipped vehicles.

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:

49 CFR 571

Before this

No earlier Federal Register document under regulation identifier 2127-AM70 since Jan. 1, 2025.

What happens next and when

Comments should be submitted no later than November 25, 2026.

The agency's dates, word for word.

Check it yourself

• The document in the Federal Register
• Docket NHTSA-2026-1519 on Regulations.gov
• Title 49 on eCFR

The record as published

Source: the Federal Register (public domain). The document in the Federal Register