Uhum! Seems nice idea but I think the best way to do is they have to fix first their Roads.

For example you are Driving to Shahaniah road (Halfway to Dukhan) on the slow lane (right side) road are uneven and some times a lot of holes, so you are forced to drive on fast late (left side) but if you drive on fast late there is a lot of maniac driving above limited speed so what else you have to do?

1. Drive in Slow lane and you might get tire puncture, break your car, the worst thing is you might get roll-over driving on uneven road or holes at 120 KMPH

2. Speed up so that the maniac driver can't get you.

3. Slam your break so that the maniac behind you will crash and burn, and cross your finger to be lucky to be alive.

I think first things first is they have to fix the road before implementing those 5KM Radars....