Originally Posted by Phukan
What is the legalised limit(DB) of horns in India?
Somewhere around 105-110 dB, but again I may be wrong.
The law is not strict enough in India and these things mostly go unnoticed. So, you can have a much more powerful horn in the car if you are careful enough to use it sensibly. Known manufacturers like Hella, etc. will surely be sticking to the safe side of law, so you can opt for any of the good branded horns (without doing any modifications to them).