Tampering with meters

You are riding taxi from New Road to Thamel via Jamal. How much it would cost you? You would say it costs you around Rs. 35 to Rs. 45. Not more than that. What if you are charged Rs. 81? Then you would say, "Man the taxi's meter is tampered!" Yes we were charged Rs. 81 for mere 10 minutes distance. The taxi with number plate Ba. 1. Ja. 4402 charged Rs. 81. And when bargained he simply slashed down charge to Rs. 60. This is just a single case. Daily hundreds of people are cheated like this. Government has implemented the standard meter and rates and legal punishments for those convicted. But still Taxi drivers and owners are not hesitating to tamper with meter and cheat passengers. To prevent this we all must be aware, but sometimes the problem is we don't know the rates because most of us hardly ride taxi unless it's emergency.

So what precautions should be taken then? What measure should be applied to prevent such cases? Come let's haunt those who tamper meter and try to cheat us. If you have any cases or incidents, share with us.