> So on a motorway or dual carriageway the limit is really 79. Nope. The limit is really 70, however to take into account possible inaccuracy in your speedomet

> So on a motorway or dual carriageway the limit is really 79. Nope. The limit is really 70, however to take into account possible inaccuracy in your speedometer or the traffic camera, there's some leeway in place. If you start assuming the limit is 79 then if nothing else, you no longer have the benefit of that leeway. How sure are you that both your speedometer and the camera are 100% accurate?