Rotating marker / raised pavement marker

Drivers who speed over the regulation by Car speed detectors will be fined.Remind drivers before accidents happened rather than blame and fine after accidents happened. We combine detector with rotating marker and use solar panels (the first note) to supply electricity. A master can lead nine sub machines to turn and color (red and yellow) will change to remind drivers the car speed.When speed at safety, the rotating marker will appear the yellow reflective surface. When speed over the regulation, the rotating marker will appear the red reflective surface.