America's headlight regulations are finally getting a much-needed reality check. The National Highway Traffic Safety Administration says it will modernize Federal Motor Vehicle Safety Standard No. 108, the federal rule governing vehicle lighting. The NHTSA even admits it needs a “long-overdue update.” The goal is twofold: make it easier for automakers to use newer lighting technology while addressing the increasingly annoying problem of headlight glare.

If you've ever been blinded by an oncoming SUV at night, you probably won't need much convincing that something needs to change. Modern LEDs can produce far more light than the once-common halogen units. At the same time, the growing popularity of tall vehicles means those headlights can be aimed almost directly into the eyes of drivers in lower cars.

NHTSA says it will examine how modern headlighting technology contributes to glare and determine what changes are appropriate. The agency also plans to look at headlamp height and aim and how they affect visibility. In other words, it isn't simply going after bright headlights. The position and direction of those headlights are also part of the equation.

At the same time, the NHTSA wants to update the rules to keep pace with modern technology. Its review will cover LEDs, dusk sensors, automatic high beams, and replaceable light sources. The agency also wants to update testing procedures for plastic optics and replaceable lenses while exploring ways to harmonize U.S. lighting regulations with international standards.

S. has already taken steps toward allowing more sophisticated headlights. In 2022, NHTSA amended the lighting standard to permit adaptive driving beam systems.

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