This is a classical case of regulating at the completely wrong level. Forget low beams and high beams. All that needs to be regulated is that the headlights ca

This is a classical case of regulating at the completely wrong level. Forget low beams and high beams. All that needs to be regulated is that the headlights can't point to other drivers, cyclists and pedestrians at a too great intensity above N inches/centimeters from ground. Set those intensity limits to safe levels, make NIST (or some equivalent organisation) come up with a national standard test to enforce them, and let car makers use whatever technology to make headlights as long as they pass that test.