The U.S. National Highway Traffic Safety Administration (NHTSA) has announced it will review the rules that govern vehicle lighting systems. The goal is to allow carmakers to use more advanced lighting technologies, which could include better glare control and improved visibility. The current regulations, which set minimum and maximum light levels, have not been updated since 1997, according to the Insurance Institute for Highway Safety (IIHS). The NHTSA plans to look at several factors, including how light is directed, the height of headlights, and the performance of different light sources. Headlight brightness is not the only concern. If headlights are too powerful, not properly adjusted, or mounted too high, they can cause glare that distracts or even dazzles other drivers. For example, a large vehicle like an SUV or pickup truck might shine its lights directly into the rearview mirror or eyes of a driver in a smaller car. Even headlights that meet current standards can cause discomfort for other drivers. According to the IIHS, while many drivers complain about glare, the number of accidents involving glare has not risen as much as the improvement in headlight performance. The institute stresses that headlights must ensure good visibility for the driver while limiting light that could bother others. The NHTSA wants to examine how the headlights are positioned, how they adjust automatically, and how they perform under different conditions. It also plans to review the testing methods for parts like plastic lenses and replaceable covers. Adaptive headlights, which can dim their brightness when near other vehicles, are also part of the discussion. These were approved by the NHTSA in February 2022 but have not become widely used. The agency is now consulting with up to 18 representatives from lighting companies, safety groups, and research institutions to get input. The public can also share their views, but no exact timeline has been set for new rules. Even with updated standards, some issues could remain. If headlights are improperly adjusted or modified, they can still cause problems. Additionally, adaptive headlights might be more expensive to repair or replace, which could be a concern for drivers. The new rules aim to improve safety, but they may not eliminate all challenges related to vehicle lighting.