Point to point radars are possible and in existence elsewhere in the world.
As you assume, they record all the vehicles between two points, and calculate the average speed of the vehicle passing between the two points. I don't see why that is such a hard concept to grasp.
As for your assumption that they would need to flash (in visible light) at night to catch every number plate, you seem to have overlooked infra red light, which is not visible to human eyes but allows special cameras to read number plates.
Which brings us to the obvious conclusion...
WHY DO YOU THINK THEY ARE CHANGING OVER ALL THE NUMBER PLATES TO A NEW DESIGN??
And if you want to know more about this technology (it's been around since the late 1970s in the developed part of the world, so it's hardly cutting edge) I am graciously providing a link:
Qatar_engineer:
Point to point radars are possible and in existence elsewhere in the world.
As you assume, they record all the vehicles between two points, and calculate the average speed of the vehicle passing between the two points. I don't see why that is such a hard concept to grasp.
As for your assumption that they would need to flash (in visible light) at night to catch every number plate, you seem to have overlooked infra red light, which is not visible to human eyes but allows special cameras to read number plates.
Which brings us to the obvious conclusion...
WHY DO YOU THINK THEY ARE CHANGING OVER ALL THE NUMBER PLATES TO A NEW DESIGN??
And if you want to know more about this technology (it's been around since the late 1970s in the developed part of the world, so it's hardly cutting edge) I am graciously providing a link:
http://en.wikipedia.org/wiki/Automatic_number_plate_recognition