NHTSA begins a negotiated update to FMVSS 108
The National Highway Traffic Safety Administration published a notice October 8 announcing its intent to establish a Negotiated Rulemaking Advisory Committee for Vehicle Lighting. The committee will develop consensus recommendations to inform a future proposal for modernizing Federal Motor Vehicle Safety Standard No. 108, which governs lamps, reflective devices and associated equipment. Public comments on the committee and applications for membership are due November 9, 2026.
Glare, new lighting technology and test methods are in scope
NHTSA says the effort will examine glare from modern headlighting systems, rules for LEDs, dusk sensors, automatic high beams and replaceable light sources, as well as the effects of headlamp height and aim on visibility. The agency also plans to consider test procedures for plastic optics and replaceable lenses and possible alignment with international lighting standards. Those subjects could matter to heavy trucks because lamp height, maintenance practices and the visibility needs of drivers and oncoming road users differ across vehicle types.
The committee will inform a proposal, not write an immediate final rule
The Department plans to appoint up to 18 stakeholders from vehicle-lighting manufacturers, equipment associations, safety organizations, research institutions and engineering groups. The committee is expected to produce a detailed consensus term sheet. If consensus is reached and the Secretary approves the recommendations, NHTSA says it intends to publish a notice of proposed rulemaking through the normal process, including another opportunity for public comment. The committee ends after submitting its recommendations or within two years unless its charter is renewed.
No lighting requirement changed with this notice
The October 8 document creates a process for developing recommendations; it does not amend FMVSS 108, authorize a new lamp or create a retrofit or roadside-inspection exemption. Fleets and drivers must continue following the lighting and reflective-equipment rules that apply today. A product marketed as brighter, adaptive or LED is not automatically compliant for a specific truck, lamp housing or operating position.
Fleets can contribute operating evidence by November 9
Carriers, maintenance providers and drivers with relevant experience may submit comments under docket NHTSA-2026-1981. Useful evidence can include repeatable observations about glare, headlamp aim after repair or suspension changes, replacement-light-source performance, weather and night visibility, maintenance cost and test procedures. Comments should distinguish measured data from individual impressions and should not disclose confidential driver, customer or company information without authorization.
Driver and fleet takeaway
Treat this as an early rulemaking step, not a reason to change equipment today. Continue pre-trip checks of headlamps, turn signals, clearance and identification lamps, reflective devices and other required lighting; keep lenses clean, correct failed or mis-aimed lamps and use replacement parts approved for the installed system. Fleets should preserve repair records and recurring glare or visibility reports, review the federal docket before submitting operational evidence by November 9 and wait for an actual final rule and effective date before changing compliance specifications.
Federal Register — NHTSA Vehicle Lighting Negotiated Rulemaking Notice
This original summary adds CDL-focused context. Visit the named publication for its full reporting and later updates.
Visit source publication →