From Car and Driver · David Gluckman · · 1m 10s
NHTSA Updates Headlight Rules for Advanced Systems
NHTSA to modernize U.S. headlight standards to allow global tech like adaptive beams and LED retrofits.
In brief
NHTSA to modernize U.S. headlight standards to allow global tech like adaptive beams and LED retrofits. NHTSA will update FMVSS 108 rules to let U.S. cars use advanced adaptive lighting systems and compliant LED replacements. Originally reported by Car and Driver.
NHTSA plans headlight rule overhaul
NHTSA will update Federal Motor Vehicle Safety Standard No. 108 through negotiated rule-making with industry stakeholders.
Advanced lighting systems face U.S. barriers
Current rules prevent full adoption of adaptive driving beams and digital matrix lights in the U.S. market despite global availability.
Mercedes and Audi prepare u.s. models

Mercedes will add partial high-beam function to 2027 S-class, GLE, and GLS micro-led systems while Audi’s 2027 Q9 features u.s.-friendly digital matrix lights.
LED retrofits face regulatory hurdles
Current rules disallow drop-in led replacements for halogen bulbs, requiring new standards for compliant retrofits.
Public comment period opens
A public comment period runs until november 9 for input on the headlight regulation overhaul.
What changes next for u.s. drivers

NHTSA’s update could enable software upgrades for existing cars and allow full adoption of advanced lighting systems in the u.s. market.
Here's the gist
NHTSA will update FMVSS 108 rules to let U.S. cars use advanced adaptive lighting systems and compliant LED replacements.





