I wish someone does something similar in India. Night time driving is a nightmare. Everyone runs on high-beam. The new class of motor-cycles are with super bright LEDs and riders put them on high beam. Night-time driving is a guessing game - you need to guess where the edge of the road is, if there is a bicyclist in between, etc.

At least in late 90s, there used to be a law to black out half the headlamp. Either that was no longer the case or it's not as vigorously enforced.

This is the classic case of tragedy of commons!