KSDK-- Starting Monday people caught speeding down a stretch of Ashby Road in St. Ann will be getting a ticket and a $100 fine.
A speed camera was installed in January outside of Hoech Middle School where the speed limit is 20 miles per hour. Police tested the camera for a month and gave out 1000 warnings. Officers say the fastest speed was clocked at 54 miles per hour while school was in session.
St. Ann police chief, Bob Scrader says the camera is already working, speeding is down 80 percent since it was installed.
"There is no way we could get those results without this camera," Schrader said.
Critics say municipalities have them because it's an easy way to bring in revenue.
But the chief says hitting drivers in the wallet is the most effective way to slow them down.