Speed Monitoring Awareness Radar Trailer (S.M.A.R.T.)

The Douglas County Sheriff’s Office has a Precision Solar Controls Radar Speed Trailer, which can be deployed, to locations where the Sheriff’s Office receives requests for monitoring the speed of traffic. The Radar Speed Trailer is a portable, self-contained speed display unit that is towed to sites experiencing speed related problems. A specially designed radar is mounted inside the locked trailer, clocking speeds of passing motorists. SAM allows motorists to see their speed displayed on a highly visible display. The speed limit sign above the display reminds the motorists to pay attention to the posted speed limit. As speed awareness increases, motorists’ in-turn will slow down, even after the unit is moved to a different location. With fewer speed-related accidents, an officer’s time is freed up and they can concentrate their efforts in other areas. Additionally, residents feel safer, which is one of the goals in providing this educational tool.

Douglas County Sheriff

Justice Center

4000 Justice Way
Castle Rock, CO 80109
Phone: 303.660.7505

Office Hours

Monday through Friday
8:00 a.m. – 5:00 p.m.


Highlands Ranch Substation

9250 Zotos Drive
Highlands Ranch, CO 80129
Phone: 303.784.7800

Office Hours

Monday through Friday
7:30 a.m. – 5:30 p.m.


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