Yup. That's pretty sleazy, alright... But, if it generates revenue, then the government is happy...
Then traffic tickets aren't "fines", really. They're more like selective taxes that can raise your auto-insurance.
Think about that. A municipality issues a ticket to collect revenue, which then gives your auto insurance company reason to charge you more for insurance. This amounts to a kickback of sorts.
All of this falls in line with "ticket quotas" that are rarely ever admitted to, although some officers have... especially in towns in the Chicago burbs like (this one's for the search engines) Westchester, Hillside, Berkeley, STONE PARK, STONE PARK, STONE PARK (not a town, really, but a speedtrap to itself), LaGrange, Bensenville, Oakbrook Terrace.... and a few others.
(I reserve the right to my opinion and if STONE PARK doesn't like it, tough.)