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speeding calculation, how do calculate speed
Guest_Plasticcouch81_*
post Wed, 4 Jul 2018 - 15:44
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first image says 129F *V=- 41mph - time 13.04.16

swcond image 164f *V=- 41mph - time 13.04.16

thirdimage 218f *V=- 40mph - time 13.04.17


how do i know if the calulated speed is correct
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post Wed, 4 Jul 2018 - 15:44
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Jlc
post Wed, 4 Jul 2018 - 16:01
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The speed is already conveniently calculated for you... (40/41mph)

Being facetious, but the speed measurement is virtually instantaneous - you can't do time over distance checks with sufficient accuracy with those pictures...

QUOTE (Plasticcouch81 @ Wed, 4 Jul 2018 - 16:44) *
how do i know if the calulated speed is correct

An approved device, operated correctly, will be presumed correct unless you can show otherwise.

This post has been edited by Jlc: Wed, 4 Jul 2018 - 18:41


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notmeatloaf
post Wed, 4 Jul 2018 - 16:41
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Do you think the speed is wrong?

As JLC says it is very likely accurate unless you have a good reason to doubt. Speed, distance and time calculations are unsatisfactory over the period and reference points in the video. The laser measures the speed in about 0.3 seconds.
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Guest_Plasticcouch81_*
post Thu, 5 Jul 2018 - 14:41
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just wondered really, and thought it would be good to check as you never know the machine might be wrong!
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Jlc
post Thu, 5 Jul 2018 - 15:44
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QUOTE (Plasticcouch81 @ Thu, 5 Jul 2018 - 15:41) *
just wondered really, and thought it would be good to check as you never know the machine might be wrong!

It might. But you'd have to show it was.


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RK=Registered Keeper, OP=Original Poster (You!), CoFP=Conditional Offer of Fixed Penalty, NtK=Notice to Keeper, NtD=Notice to Driver
PoFA=Protection of Freedoms Act, SAC=Safety Awareness Course, NIP=Notice of Intended Prosecution, ADR=Alternative Dispute Resolution
PPC=Private Parking Company, LBCCC=Letter Before County Court Claim, PII=Personally Identifiable Information, SAR=Subject Access Request

Private Parking - remember, they just want your money and will say almost anything to get it.
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The Rookie
post Thu, 5 Jul 2018 - 16:32
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Very unlikely to be wrong, that’s pretty much textbook.


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The Slithy Tove
post Fri, 6 Jul 2018 - 15:31
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Presuming this was in a 30 zone, are you contesting that the measurement is 10 mph (i.e. over 30%) out?
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