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Specs Camera Question
Governor312
post Fri, 14 May 2010 - 14:09
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Ok a stuipid question i guess but how do the Specs cameras work out your speed? For example if i was going round M25 where there are quite a few of these cameras operating with a 50mph speed limit, what sort of tollerance do you have going through them, is it the normal 10% +2? Also if i drove through them at 50mph is this my average speed between the points, as i understood that was not the case, but maths beats me every time!!! mellow.gif
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Governor312
post Fri, 14 May 2010 - 14:43
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QUOTE
I am not aware of any SPECS installations which have resulted in NIPs being issued for speeds less than 10% plus 2mph in excess of the posted limit.



So i drive M25 route everynight with the 50mph roadworks, in my work as a trucker, my truck is limited to 56mph, although Satnav says 54, so i am below the 10% +2 margin if i carried on with this speed? Also am i correct in saying that most speedos ore not actually correct, ie the differance between my speedo readout & satnav speed??
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nemo
post Fri, 14 May 2010 - 14:55
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QUOTE (Governor312 @ Fri, 14 May 2010 - 15:43) *
So i drive M25 route everynight with the 50mph roadworks, in my work as a trucker, my truck is limited to 56mph, although Satnav says 54, so i am below the 10% +2 margin if i carried on with this speed?

Whilst a true vehicle speed of 54mph is likely to be below the enforcement threshold, it would be no defence to an allegation of excess speed to state that 'some bloke on the internet told me.....'.

QUOTE (Governor312 @ Fri, 14 May 2010 - 15:43) *
Also am i correct in saying that most speedos ore not actually correct,

The size of error is likely to vary from speedo to speedo. But it's worth noting that speedometers must not display a speed which is lower than the true vehicle speed.
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