U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
NACTO's City Limits For Information Only: This NACTO guide gives practitioners a detailed, context-sensitive method to set safe speed limits on urban streets
FHWA RD "&" T: Synthesis of Safety Research Related and Speed Management
This report presents a synthesis of research findings on the safety effects of speed, speed limits, enforcement, and engineering measures to manage speed.
ITE – Traffic Calming Library
The Traffic Calming Library contains a searchable database of reports, articles and other documents related to traffic calming.
The International Association of Chiefs of Police maintains a website that lists speed measurement equipment that has passed tests for accuracy.