1. The devices are very accurate. Long gone are the days when unreliable devices could be made a mockery of in a courtroom. These days, the calibration and self checks that the devices perform before allowing use are pretty bombproof.

2. If there is any guidance, then it is precisely that - Guidance. It is not obligitory for the officers or their superiors to follow that guidance. Even if no accidents have been recorded, you may find that speeding has been a concern raised by the local council, so enforcement has taken place.

3. See reply (2)

4. Speeding procedures ? I'm not sure exactly what you're asking for. Court procedures ? Officer training procedures ?

Now, I'll put out my opinion here. Feel free to ignore it, because I'm not the most subtle of people.

You've been caught. Accept it. Especially if you were actually doing that speed. Grossly irresponsible. Imagine if it was your son/daughter/little brother/sister/frail granny who was being nearly knocked over by cars going through a 30 limit at 45 mph or more. I reckon you'd want some action taken by the police then.

Edited by RobJP on 04/07/2014 at 00:44

You were apparently recorded as speeding, if you are offered a speed awareness course take it, other wise plead guilty by letter.

If you go to court you will be found guilty and the penalties & victim surcharge will be higher, than if you had put your hands up