In the US, there aren't many, if any, speed cameras. At least I've not seen any.

What we do have an abundance of are "red light cameras". It always seems that they're in places where people tend to push yellow lights, as opposed to places where accidents tend to happen. Also, they're often installed under a system where they're run by private organizations who provide the data to the local government, and then get kickbacks from the government based on the number of fines they collect. There's not a conflict of interest there at all. Nope.