The Walpole Police Department have instituted a new initiative called “Catching Kids Doing Right.” When officers on patrol see kids on their best behavior, they issue a positive ticket, which provides the kids with a free ice cream cone at Watson Scoops in town.
And here is a similar program targeting catching teen drivers when they are driving well in Michigan:
https://reason.com/blog/2015/09/11/michigan-cops-will-pull-teenagers-over-f