I agree with GaryInMI that it works "good" but not "great". I use it and feel that it works very well when vehicles are only coming toward you and the high beam assist will dim and brighten as needed. If you are in a rural or semi-rural road with your brights on and approaching an intersection where another vehicle is waiting to make a turn onto the road where you are driving, the high beam assist sensors are not able to see the headlights of that vehicle and thus the high beam assist will continue to keep your lights in the "bright" setting. This can be blinding to the other vehicle as they are waiting to make their turn. In such a situation, I dim my "brights" manually by pulling the headlight switch back. Another situation where a safety assist is helpful, but not as good as a human who is focused on driving. Thus when using the high beam assist, please be considerate of the occasional times where it still might be blinding for other drivers.