I've been following traffic science for decades. Look into it, there's a heavy increase in collisions where cameras are present. And furthermore, credible analysis shows that to decrease speeding and increase safety (particularly at intersections) the main improvements are found by synchronizing lights and extending yellow times. But instead what happens is those underlying issues are ignored so the tax can be gathered and "cherry" jobs can be created for former policy-makers as happened in Winnipeg. It's not about safety. It has a safety component, but as with most things, when you scratch and look below the surface, it's a much more complex issue.
I personally feel, and you're free to disagree, that the installation of a camera is an admission that real safety measures are being actively ignored. Shrink the number of lanes? Narrow them? Traffic-calming measures? More roundabouts and fewer timed lights? Nah, just slap a camera there.