A speeding vehicle crosses sensors embedded in the pavement just before entering the speed camera zone. If the speed of the vehicle is excessive, (11 mph and greater over the posted limit), the cameras will initiate and record the speed violation.
If a vehicle meets or exceeds the speed criteria established by the county, the system captures a front shot of the vehicle, the driver, and a back shot of the vehicle showing the license plate.
With each image, the system records relevant violation data such as the location, date, time (in tenths of seconds), the speed of the vehicle, and the posted speed limit.
The system also records a 12-second video clip of each violation.
Trained processors, as agents of the Pima County Sheriff’s Department, review and compare the images, data, and video confirming the speed violation and authorize issuance of citations.