"Federal Motor Vehicle Safety Standard 108 (FMVSS 108) regulates all automotive lighting, signalling and reflective devices in the United States.
In February 2022, FMVSS 108 was amended to allow automakers to install adaptive driver beam (ADB) headlamps on new vehicles. However, carmakers have not implemented ADB because of contradictions in the rule.
As of December 2024, FMVSS 108 has not been updated to adapt to widespread use of LED headlamps, which are criticized for being too bright and blinding other drivers. Some manufacturers have reportedly engineered headlamps to have a dark spot where they are measured according to the regulation while being over-illuminated in the rest of the field."
"Adaptive Highbeam Assist is Mercedes-Benz's marketing name for a headlight control strategy that continuously automatically tailors the headlamp range so the beam just reaches other vehicles ahead, thus always ensuring maximum possible seeing range without glaring other road users.
This technology is also known as Adaptive Driving Beams (ADB).
Until February 2022, this technology had been illegal in the US, as FMVSS 108 specifically stated that headlamps must have dedicated high and low beams to be deemed road-legal. An infrastructure bill enacted in November 2021 included language that directs the National Highway Traffic Safety Administration to amend FMVSS 108 to allow the use of this technology, and set a two-year deadline for implementing this change. In February 2022, the NHTSA amended FMVSS 108 allowing adaptive headlights for use in the US. However, the new regulations are quite different from the ones in effect in Europe and Asia and prevent car manufacturers from easily adapting their systems to the US market."
I have adaptive lights on my Ford Lightning (and Model 3, more recently), and I do like it, but it is not without compromises.
It relies on the camera recognizing what should be excluded from the light pattern, for one. Easy for oncoming cars as well as ones in front of you. Less easy for vehicles that are perpendicular to you (like just showing their nose and driver, waiting to turn onto the road you are already on). And then there are pedestrians.
They do try to mitigate that by turning off the adaptive high beam whenever the car detects that you are in a well lit area with lots of ambient lighting sources (i.e. the city), but it's not foolproof. And since you just leave it on all the time, you end up using the "high beam" light far more often than you'd probably choose to when controlling it manually.
"Federal Motor Vehicle Safety Standard 108 (FMVSS 108) regulates all automotive lighting, signalling and reflective devices in the United States.
In February 2022, FMVSS 108 was amended to allow automakers to install adaptive driver beam (ADB) headlamps on new vehicles. However, carmakers have not implemented ADB because of contradictions in the rule.
As of December 2024, FMVSS 108 has not been updated to adapt to widespread use of LED headlamps, which are criticized for being too bright and blinding other drivers. Some manufacturers have reportedly engineered headlamps to have a dark spot where they are measured according to the regulation while being over-illuminated in the rest of the field."
https://en.wikipedia.org/wiki/Federal_Motor_Vehicle_Safety_S...
"Adaptive Highbeam Assist is Mercedes-Benz's marketing name for a headlight control strategy that continuously automatically tailors the headlamp range so the beam just reaches other vehicles ahead, thus always ensuring maximum possible seeing range without glaring other road users.
This technology is also known as Adaptive Driving Beams (ADB).
Until February 2022, this technology had been illegal in the US, as FMVSS 108 specifically stated that headlamps must have dedicated high and low beams to be deemed road-legal. An infrastructure bill enacted in November 2021 included language that directs the National Highway Traffic Safety Administration to amend FMVSS 108 to allow the use of this technology, and set a two-year deadline for implementing this change. In February 2022, the NHTSA amended FMVSS 108 allowing adaptive headlights for use in the US. However, the new regulations are quite different from the ones in effect in Europe and Asia and prevent car manufacturers from easily adapting their systems to the US market."
https://en.wikipedia.org/wiki/Headlamp?wprov=sfti1#Adaptive_...