For these cameras (and speeding cameras, too) to be effective at all, you either: A) need a huge volume of them so people assume they will certainly get caught

For these cameras (and speeding cameras, too) to be effective at all, you either: A) need a huge volume of them so people assume they will certainly get caught if they use their phone even just once B) place them at critical spots and make them very clearly visible e.g. via adding signs Otherwise, they're just hidden and rare enough that nobody actually changes their driving style. Now neither A nor B are the case. So what's their use besides making money? Also, why take money only? Off the top of my head, why not something like each time you get caught, you get a "buffered" 1-day driving restriction and once it adds up to some amount it's applied? Currently you can just speed all the time as long as you're not grossly over the limit. All you need to do is pay a little money which might be trivial for some people. A driving restriction might not be. These cameras obviously aren't implemented with safety as a priority. It's about money first and foremost. Safety is just a pretense. Same thing for govt surveillance and so on. It's surprising to me that the same excuse can be used over and over effectively.