If people are speeding, surprise surprise cops are helpful. Towns need to work WITH waze not against it. I can imagine towns REALLY cranking up fines to use speeders on usually quiet streets (where kids may be playing) to ensure that the money flows into creating appropriate barriers.
There was a neighborhood where I grew up that had speed bumps in a neighborhood that were smoothest if you hit them at about 40mph. That did nothing but INCREASE traffic speeds (myself included).
We've got speed bumps in our neighborhood. They suck, and people just speed over them anyway.
Ditto using stop signs as traffic calming measures. YAY, let's increase air pollution (fuel burnt), increase noise pollution (accelerating and braking vehicles), increase water pollution (brake dust and other byproducts) and waste everyone's goddamned time by making every single car come to a stop (regardless of cross traffic or pedestrians) just so that some NIMBY can think SOMETHING WAS DONE.
I've noticed this myself in certain areas, the speed bumps taken at higher speeds cause less issues, but it still of course increases wear and tear on motor vehicles, in most cases unnecessarily so.
It was taken out a few months later because of noise complaints. Turns out the locals preferred the people going a bit too fast to the people downshifting, breaking, clanging over the speed bump and then accelerating away.
The best way to keep a street quiet is to remove the cues that tell drivers that they can drive quickly. Narrow the street, remove the sidewalks, add trees and other visual noise to the margins, and remove lane markings. Replacing asphalt with gravel can also help (and is cheaper to maintain).
You don't need to fine people to get them to slow down if the road is terrifying to drive on at more than 20 MPH.
I don't think you're going to find research to support that. At least, I couldn't. http://skeptics.stackexchange.com/questions/6419/do-speed-bu... has some interesting discussion of it.
I'm a big fan of the other advice, though, about changing the road design to discourage speeding.