# US headlight rules get a long-overdue rewrite

> The federal government is modernizing decades-old headlight regulations to allow advanced lighting technology that has been standard in Europe and Japan.
- Title: US headlight rules get a long-overdue rewrite · Ars Technica
- Summary: The federal government is modernizing decades-old headlight regulations to allow advanced lighting technology that has been standard in Europe and Japan. The…
- Keywords: nhtsa, headlight regulations, fmvss, adaptive beam technology, automotive safety, led headlights, federal motor vehicle safety standards, technology, science, headlight, rules, get
- Source: Ars Technica — https://arstechnica.com/cars/2026/10/feds-get-ready-to-rewrite-car-headlight-rules
- Published: 2026-10-08T20:26:13+00:00
- Read time: 1 min
- Topics: nhtsa, headlight regulations, fmvss, adaptive beam technology, automotive safety, led headlights, federal motor vehicle safety standards, technology, science
## US headlights lag behind the world
Federal Motor Vehicle Safety Standards limit American cars to basic high and low beams, while Europe and Japan allow adaptive lighting that adjusts to oncoming traffic.This outdated rule has blocked advanced safety technology for years.

> Today's standards do not allow automakers to deploy the latest safety-improving lighting technologies
## A decade of regulatory delay
Toyota petitioned for rule changes in two thousand thirteen. The National Highway Traffic Safety Administration took five years to publish a proposed rule, then another five years to finalize it in two thousand twenty-two.
## Why US rules differ from Europe
Europe requires manufacturers to submit cars for type approval testing. The US relies on self-certification, so NHTSA rejected Europe's subjective glare tests and wrote its own standards instead, creating a separate regulatory path.
## Rewriting the rules for twenty twenty-six
The National Highway Traffic Safety Administration is starting a negotiated rulemaking process to modernize headlight standards. Goals include harmonizing with global rules, updating for LEDs and ambient light sensors, and preventing glare.

> This collaborative approach will allow us to update outdated regulations, foster innovation, and keep everyone on our roads safer.
## Key takeaway

The National Highway Traffic Safety Administration is rewriting headlight rules to allow adaptive beam technology and other innovations, aiming to harmonize US standards with global counterparts by twenty twenty-six.