Speed Measurement Laboratories
www.speedzones.com

Traffic Radar Handbook
www.copradar.com

National Motorists Association
www.motorists.org

National Highway Traffic Safety Assoc.
www.nhtsa.dot.gov

Speedtrap Registry
www.speedtrap.org

Mobile Electronics Retailer Assoc.
www.merausa.org

React International
www.reactintl.org

National Weather Service
www.nws.noaa.gov

Applied Concepts
www.stalkerradar.com

Kustom Electronics
www.kustomsignals.com

M.P.H. Industries
www.mphindustries.com

Decatur Electronics
www.decaturradar.com

Laser Atlanta
www.laseratlanta.com

BMW Car Club of America
www.bmwcca.org

Porsche Club of America
www.pca.org

Mercedes-Benz Car Club of America
www.mbca.org

Ferrari Club of America
www.ferrariclubofamerica.org

Audi World
www.audiworld.com

Lexus Owners Club
www.lexusownersclub.com