From the South Milwaukee Police Department Facebook page …
The SMPD cares about your physical safety on the road. We have received funds from the Department of Transportation to focus on enforcement of seat belt laws. The department will be conducting additional traffic enforcement activities in the coming weeks. Please buckle up and drive safely!
More details from NOW here. Stay safe!
South Milwaukee Blog 
Maybe while they’re at it they can do something about the speeding on 5th Ave. On second thought, never mind. I’ve complained about this for YEARS and the police increase their patrols for a week or so and then it’s back to racing, but, hey, as long as the racers are wearing their seat belts it’s all good.