High beams are a vital safety feature when driving at night on dark roads but are dangerous to oncoming traffic if your high beams won't turn off.

Anyone who has driven a car equipped with the old sealed-beam headlights from the 1980s will know that modern LED lighting technology is one of the greatest improvements of the modern automotive age.

Four of these LED elements are housed in what looks like a rectangular (slightly longer than it is wide) headlight setup. Three of these four LED elements inside the headlight housing are smaller ...