How dies forcing drivers to focus in the speed they’re driving decrease safety?
The camera demands I drive at a speed different from everyone else. That is unsafe.
Also, I have to worry about inadvertently exceeding the speed limit by 1mph for a few seconds and getting a surprise fine despite my efforts to avoid it. That's a dangerous distraction.
Speed cameras are nothing more than a way for cities to spend less money on highway patrols and make more money on surprise fines. Safety's got nothing to do with it. It's all about the money.
in which case there’s an increase in safety for non-car drivers due to slower cars.
Are you insinuating that you're okay with people being injured or killed, as long as they happen to be inside a vehicle at the time? You hate motorists that much? That's messed up.