CLARKSBURG, W.Va. ( WBOY /NEXSTAR) — It’s something many drivers have no doubt experienced during the wintertime. You’re driving at night when you’re seemingly blinded by a pair of LED headlights. You might wonder if there’s a limit on how bright headlights can be, or even how headlights that bright are legal in the first place.
The answer to that question is a very long one— about 122 pages long to be exact, and it can be found in Title 49 Subtitle B Chapter V Part 571 Subpart B § 571.108 of the Code of Federal Regulations.
Luckily, the answer was summed up in a letter written by then Acting Chief Counsel for the National Highway Traffic Safety Administration (NHTSA) John Donaldson in February 2024…