Here's my experience with the Police emergency phone number, 100, that makes me pray that nobody ever has any emergency.
Last Saturday, I was returning by train from Thanjavur. While the train was waiting for a clearance to enter the railway station, I heard some commotion outside. Two guys, at least one of them very drunk, were fighting. The inebriated one was lying on the tracks (and hardly moving) and the other man was beating him up. This was at 4 AM and it was still pretty dark. Sensing danger to their lives if a train happened to approach on that track the passengers from my coach urged them to move away from the rails. Since they didn't pay heed, I decided to call the police helpline 100.
My first reaction when the lady answered the phone was surprise at the complete lack of urgency in her tone and voice. I explained the situation to her, and she asked me to call the railway police. There was no answer from that number so I dialed 100 again and got to speak to the same lady. This time she asked me to call the general railway helpline 197!