I had been wondering what those cameras were for. All you need are some white lines and a stop watch to check for speeding... or a little free time to track someone on the highway. I'm sure they will find other uses for these becides monitoring traffic flow.
http://www.gazettenet.com/2010/10/1...?SESS237e7ddfcd7ded964f2c43ee04d05298=gsearch
http://www.gazettenet.com/2010/10/1...?SESS237e7ddfcd7ded964f2c43ee04d05298=gsearch