It is pretty uncommon here too, although there certainly is an effect that mutates every driver to a choleric imbecile as soon as they get behind the wheel. Fascinating really.

As if those 5 seconds of waiting would ruin your whole day. In most cases it isn't even 5 seconds and honking nets you nothing besides animosity.

Given that, I wouldn't want to drive anything in India that is larger than a rickshaw. But those have very likely horns too if they want to survive. A busy road in India just looks like complete chaos.