Have you seen these guidelines issued by the IAM with regards to speeding?

I have just been reading a local IAM bulletin that lists "new guidelines nationally introduced.” It does not indicate who issued the guidelines, but goes on to say that "These new guidelines have been...

Is it true that you can exceed the speed limit by 10 per cent plus 3mph?

Somebody told me yesterday that if you are caught speeding you are allowed 10 per cent over the limit plus 3mph because a car's speedo is not calibrated. Is this true?

Please advise your readers that the speed limit has changed on the A413 near Buckingham.

In the last week or two, a section of the A413 between Buckingham and Maids Moreton has had the speed limit dropped from 40mph to 30mph. There have been no obvious roadside warnings to this effect except...

Badly warn

I have a problem. On a well-used route there are two 30MPH SLOW DOWN signs, neither of which appear to be working. So how do I tell the police without admitting I have exceeded the speed limit?