Many people say that the problem is the speed limit. It may be better to look at this from the other side: If, for proper safety of the neighborhood, the cars should only be going 25 mph, then the roads should be redesigned such that cars can only go 25 mph.
This can be done several ways:
- speed bumps
- adding islands to intersections that must be driven around
- extending curbs into the street to make straight streets curvy
- blocking off some streets (or making some parts one-way)