On 12 Feb, 12:26, Mizter T wrote:
On 12 Feb, 12:14, Roland Perry wrote:

In message , at 11:52:45 on
Tue, 12 Feb 2008, Anon remarked:

The new digital cameras are going to be set at the normal 10% 0f the speed
limit + 2mph (80mph + and your taking a risk basically)

A true 80mph will typically be over 95mph indicated, so I have no
sympathy for people caught by these cameras.
--
Roland Perry

Perhaps I'm being thick Roland but I don't really understand the point
you're making - how is "a true 80mph" in fact "typically [...] over
95mph indicated" ?!

The diference between what the speedomoter reads and the actual speed.
I have a Origin B2 in my car which has GPS speed indication. The
difference between it and my cars speedomoter is roughly 3mpg ...
granted, my car is relaively new and the Germans know precision but
all the same I think 15mph variance is pretty unlikely even with an
Austin Healy rustbucket (but it probably couldn't get to 80 in the
first place!)