“Each of the 911's lighting units includes 84 individually controlled LEDs that allow the car to continuously morph the pattern of its beams. When a car approaches in the oncoming lane, the 911's headlights dim around it while leaving the rest of the pattern bright. The other driver doesn't get blinded, but you still have blazing lights on your side.”

This allows you to block out certain portions of the beam so you don't blind other drivers as they approach.

They're pretty neat! You can drive on a highway, have high beams lighting up signs but not dazzling other drivers.