Video : Shardlow and Sawley, Derbyshire by car.

I've just uploaded my latest driving video.
This one starts in the village of Shardlow, briefly goes into Leicestershire then back into Sawley and ends at the edge of Long Eaton.

At 4:10 you will notice that there is a speed camera pointing towards me. As you drive past it you will see that the road has the markings on it. Why is the camera pointing in the opposite direction to the road marks?
The marks are normally used as speed markers so that the two photographs that a speed camera takes can be used to prove the speed of travel.
I'm sure someone out there will be able to explain why the marks are NOT in the view of the speedcamera lens.

thanks
Andy