We are plagued by these over here. Dozens of the things.
Mobile ones they set up by the side of the road
Fixed cameras
Fixed red light cameras with radar for speed too
Distance/time averagers on the freeways
This state has about 4 million people in it, and the gov expects to make $427 MILLION from speed fines this year. They have turned it into an artform. Automated everything, laws that state that unless you can give them someone's admission they were driving the car, you get the ticket and the points. Fines for going 3kmh over the limit. That's right, 1.8mph over the limit, bang.
DO NOT LET THIS HAPPEN NEAR YOU.
Meanwhile the Police minister is on tv saying "oh but it's for safety, we have cut the road toll". The toll has GONE UP - IT IS NOT RELATED! But the public here are too lazy to have themselves represented in government, and the elected officials, for some reason, seem to like to introduce this crap - like the greater earnings are theirs or something. Idiots.
All I can say is, start burning those things down like they do in England and France. Get them out now before they take hold!