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speed cameras

 
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pko
Occasional Visitor


Joined: Nov 10, 2003
Posts: 53
Location: norfolk uk

PostPosted: Sun Jun 13, 2004 5:08 pm    Post subject: speed cameras Reply with quote

Re the speeding debate, there are 2 points which spring to mind, firstly I believe that by law, car speedo's only have to be accurate within 10% either way. So surely if someone is nabbed for doing 33mph or less in a 30 limit, & their speedo shows 30mph that must be a good defence. Likewise up to 77mph on a dual carriageway.
secondly, in view of this the Association of Chief Police Officers recommended that prosecution should only be for 10% +3 mph over the limit. Has this now changed?
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DavidW
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Joined: 17/05/2003 02:26:21
Posts: 3747
Location: Bedfordshire, UK

PostPosted: Sun Jun 13, 2004 5:16 pm    Post subject: Reply with quote

A car speedo can over-read by up to 10% but must not under-read. As a result, most over-read by somewhere around 3-5% to ensure they don't under-read.

At a true road speed of 30mph, this means that a speedo can show anything between 30 and 33mph.


The rules on tachographs are rather stricter.



David
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