You cannot use anything that could possibly make it hard to read for a police officer because if a police officer is having hard time reading your plate, he will pull you over.
That is probably why they made it illegal to use a plate frame for vehicles in AZ. I was entertaining the idea of a layer (film) of some sort of a chemical where it made things illegible upon flashing.
Like some sort of an oil. Heck you can even use mud or sticky dirt to make one of the characters on your plate look different. Cops can't say anything because it could have naturally occurred.
I am sure there are ways to circumvent this but for the most part I would just go along with the posted speed signs plus 5mph. I figured, AZ already has really crappy, ignorant and crazy drivers so why risk it.
Those things are nothing but another source of revenue. Sad part is, majority of the penalties people pay goes to the private company that owns and operates them.
Mainly, this private company will brainwash the local government into installing and using them, by selling them on the idea of average X amount of money per month, etc. Of course their cut would be like 60%-80% claiming cost of operating (material, maintenance, support, etc.). Both that company and the local government would like residents to believe it is for their safety blah blah yet if a camera at certain location(s) would ever to stop generating enough revenue, it/they would get taken down after a short while...what happened to the public safety? Did that intersection became safer all of a sudden? Of course not but amazing how majority of the public would actually buy into this scam and support it vehemently.
I lived in Phoenix, AZ and what an utter annoyance they were. People driving the speed limit would slam their brakes upon detecting one making it super fun for people behind them. those photo radar cameras never seemed to have made things any safer, people were still running the red lights and speeding, only to slow down at those known specific locations. It was a fake "safety" illusion, it didn't make anything safer nor helped, any of those idiots running red lights or driving like there was no tomorrow, become better drivers.
Much like most traffic violations, they make nothing better or safer, they are designed merely to generate revenue. That is why when you get cited, you are guilty until you prove otherwise, exact opposite of regular crime cases.
The so-called rumors are true, without your signature, they are not enforceable meaning if you do not pay one, they have to serve you using a individual as a courier who delivers the papers to your door and gets a signature after confirming the ID of the person. If I am not mistaken, they would have 120 days to deliver (serve) the papers otherwise, case gets automatically dismissed.
If you are not the registered owner or if you were wearing a hat/cap that covered your face enough to make face recognition impossible, case dismissed. If you looked that or had the sun visor down and it covered your face, case dismissed.
I had 2 of those, kept the pictures as souvenirs. They probably sent someone to serve me but first time, I was at another address and the second time, living in a different state. Was my DL suspended? Nope!