Well I’m kind of excited! I had written a concept about a new type of speed camera two years ago and it seems like it’s now become a reality. Although the current cameras are a bit different in functionality they acheive the same goal.
In short, my concept was that there would be a speed camera that would tag a car that passed by with an unique identifier. When passing the second speed camera, it would calculate how long it took the car to reach it and calculate the average speed. If the car passed the second camera’s checkpoint too quickly, then you would be fined.
Pros: You can’t slow down at the camera then speed up, you have to follow the speed limit.
Cons: The only way to escape is to be a mathematician. If the limit is 80km, and you drove up to 100km for 50 meters and then slowed down to 60 for 50 meters then you’d be safe. (People who speed aren’t geniuses though right?)
Here’s a picture of the new camera and here’s their explanation of how it works

New Traffic Cameras Qatar are not just nice looking – they are intelligent technology.
First thing is that these cameras do NOT flash. They can take photos in complete darkness through ultra-light sensors, so even if it does not flash, it could have caught you. They also automatically read your number plate from the picture taken.
Now, here comes the catch. These cameras are continuous photo-taking cameras and they will take your photo regardless if you have been speeding or not. Then the next camera in 3-5 kms again does the same. Now, instead of checking your speed through advanced radars, these cameras are very simple and all they do is calculate how fast you traveled between the 2 cameras. If you arrived at the next camera faster than 120 km/h (or whatever the speed limit is) then you get fined.
What does this mean?
It means that you can stop speeding up between cameras and slowing down as it does not matter anymore. If you are speeding in between 2 cameras you will get fined.