Ding! That's why they are not legal. Not according to the NHTSA's procedures. And if you go to court to fight the ticket, who is the prosecution's expert witness? Unless those cameras can talk, noone. It's a financial boondoggle that violates every spirit of the law.I dont get it. How do these cameras work??? Ive ridden with many cops who have explained to me the complexities of running radar. Thats why all officers are sent to a radar certification school. There can be many mistakes made when using radar to catch speed. There could be large trucks nearby, there could be many other cars nearby, or large road signs. I police rookie cannot just start using radar the first day, they must get trained because there are many factors that go into making it work accuratly. So that leaves the question of how the hell these cameras possibly work?