Here is the latest iteration in car makers trying to break into the automatic high beam/low beam market. Volvo Cars is trying to make driving at night safer and more comfortable with their new permanent high beam tech. Active High Beam Control allows continuous use of high beams that amps up visibility in the dark  without having to switch to low beam when meeting or catching up with other cars. A camera located near the rear view mirror detects other cars and a control unit relays the information to a projector mechanism housed in the headlight. A tiny cylinder with metal pieces of different sizes allows shading of just as much of the beam as necessary so as not to blind the other driver. Take a look:

Audi has had their matrix beam LED headlamps, which basically do the same thing, on its concept cars for a few years now but the US National Highway Traffic Safety Administration doesn’t allow their use under its current laws even though they pretty much threw their hands up in the air when Audi asked them why not. So we’ll just have to wait and see if Volvo’s system actually gets the go-ahead for the US market.