Place as many camera's as needed for people to start keeping themselves to speed limits etc.
People who complain are usually people who have been ticketed. Well sorry for your damned luck but if you had followed the rules of the road you would not have been ticketed in the first place.
Don't come crying when you have had a speeding ticket, you broke the law so you have to pay the consequence. And no, the "safety only" argument means nothing to me because people who commit speeding offenses on one road will most likely do it on loads of other roads too. But as the police does not have the money for, or the attitude to police everybody on every street, camera's will be put on roads that either have the risk of leading to dangerous accidents or roads where a lot of people break the speed limit.
If you don't want a ticket, don't speed. If you don't want a DUI, don't drink and drive. If you don't want to be ticketed for running a red light, don't run a red light.
The best way to cost the state money? Behave yourself and keep to the speed limits. Don't run red lights, make illegal U-turns etc. etc. etc. etc. etc. You will save money yourself and maybe, just maybe free up the police to fight actual crimes instead of playing kindergarten cops to people who speed, run lights, ride your bumper or do other silly and mostly dangerous stuff.
I am 45 years now and have been on the roads now for about 33 years by myself and have had 1 speeding ticket in all that time.
The odds of someone to get a ticket if you follow the maximum speed limit is very small, break that speed limit and you will have to pay the consequence IMHO.