Hello Mr. Harjit Singh Matharoo,

Before you run and out and buy something unproven check out the below web site. It describes how to detect vehicles. This device is extremely effective and is used at most intersection around the world. I have used it in some projects I was hired to do and found it to work well.


http://www.engr.usask.ca/classes/E...node5.html

Regards,

Charles Banister