Better Neighborhoods 2002
http://sfgov.org/planning/neighborhoodplans/
San Francisco Planning Department's Better Neighborhoods Program. A program devoted to revitalizing a number of areas in San Francisco through neighborhood planning.

Institute of Transportation Engineers
http://www.ite.org/traffic/index.html
The Institute for Transportation Engineers. A good resource for traffic calming basics.

City of Portland, OR - Office of Transportation
http://www.trans.ci.portland.or.us/trafficcalming/
Portland is often touted as one of the most livable cities in America. Check out their traffic calming efforts.

City of Seattle, WA - Department of Transportation
http://www.seattle.gov/transportation/
A great example of innovative traffic management.

School Area Safety related:
Go for Green Ontario, Canada
Marin County Safe Routes to Schools
Centers for Disease Control and Prevention
Way to Go! Vancouver, Canada
University of North Carolina Safety Research Center