Richard Thaler, a behavioral economist at the Booth School of Business in Chicago, wrote an interesting op-ed in the NY Times recently.
“Governments,” he says, “typically use two tools to encourage citizens to engage in civic behavior like paying their taxes, driving safely or recycling their garbage: exhortation and fines. These efforts are often ineffective. …
“As every successful parent learns, one way to encourage good behavior, from room-cleaning to tooth-brushing, is to make it fun. Not surprisingly, the same principle applies to adults. Adults like to have fun, too.
“In this spirit, the Swedish division of Volkswagen has sponsored an initiative they call The Fun Theory. Their first project is documented in a highly popular (and fun) YouTube video. The idea was to get people to use a set of stairs rather than the escalator that ran alongside it. By transforming the stairs into a piano-style keyboard such that walking on the steps produced notes, they made using the stairs fun, and they found that stair use increased by 66 percent.
Suzanne's Mom's Blog 
Heh! I like the idea of those observing the speed limit having a chance to win some of the fines from the speeders!
And yes, making those stairs play music was inspired 😀
Reminds me of this post on using mimes to control traffic, https://suzannesmomsblog.com/2011/10/28/traffic-mimes/, and this one on using haiku, https://suzannesmomsblog.com/2011/12/19/public-service-haiku/.
Yes, I remember both those stories–though I recall thinking that it’s hard to tell whether they make you more aware of the traffic and the fact of being a driver (or pedestrian), which would be a good thing, or if they become a distraction by the very nature of their entertainment value, which might cause problems.
Good point and good for you for considering more than one angle to an idea.