Specs Camera Question |
Specs Camera Question |
Fri, 14 May 2010 - 14:09
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#1
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Member Group: Members Posts: 17 Joined: 13 Oct 2009 Member No.: 32,790 |
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!!!
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Fri, 14 May 2010 - 14:43
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#2
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Member Group: Members Posts: 17 Joined: 13 Oct 2009 Member No.: 32,790 |
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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Fri, 14 May 2010 - 14:55
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#3
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Member Group: Members Posts: 7,686 Joined: 21 Dec 2004 From: ------------- Member No.: 2,073 |
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.....'. 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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