My City of Fresno, CA tried Red light cameras years ago, The deal was that the supplier provided all equipment including installation and would split the revenues with the City. They had nothing but trouble with the cameras (going off at yellow and green lights, not tripping on red...obviously first gen tech). The City never collected one dime nor did the vendor in fact the vendor did not even bother to remove the cameras, they are still there for the birds to sit upon.
There is a company in the US that is making an anti-drone defense system for public purchase (I have to check my too many book marks to find it, maybe later). Obviously it is illegal to shoot the buggers down, this system scrambles the heck out of the drone electronics that either ground it or make the intended mission impossible, all data is destroyed.Chalk one up for free enterprise!
