I don't whether or not they're operational. They are situated such that they would snap a photo of the rear of the car.

The photo above was taken from the opposite lanes, so the camera would indeed photograph the rear of a speeding car.

It looked like a speed camera to me. . .as I recall it had two parts to it just like the normal "on a pole" cameras & detectors. The parts were smaller, but looked the same - even had the "light hood" on the camera.