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Calibration out of date , Split from hijacked thread & merged
Boiledpiss
post Fri, 17 Aug 2018 - 16:25
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I received a nip for 48 on this 40 stretch. The calibration certificate shows one of the tools used to calibrate the camera was itself calibrated over a year before the camera was calibrated. According to the home office police scientific branch, these tools should be calibrated annually. How can they have a valid certificate if it wasn’t carried out to the police’s own guidelines? I am upload them if anyone is interested and tells me how. Surely if enough people challenge it on for this reason they cannot use evidence from this camera??
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post Fri, 17 Aug 2018 - 16:25
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peterguk
post Fri, 17 Aug 2018 - 16:30
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QUOTE (Boiledpiss @ Fri, 17 Aug 2018 - 17:25) *

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I received a nip for 48 on this 40 stretch. The calibration certificate shows one of the tools used to calibrate the camera was itself calibrated over a year before the camera was calibrated. According to the home office police scientific branch, these tools should be calibrated annually. How can they have a valid certificate if it wasn’t carried out to the police’s own guidelines? I am upload them if anyone is interested and tells me how. Surely if enough people challenge it on for this reason they cannot use evidence from this camera??
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An out of date calibration certificate does not automatically invalidate the device.
How do you know you have the most up-to-date certs?


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morrisman
post Fri, 17 Aug 2018 - 16:33
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Looks to me that you are stating the road wheel was out of calibration date, but this is used to measure the Baseline Distance which as stated in the second image 'Is only measured at the time of the initial calibration..." so you would need to find out when that event was before the road wheel calibration date becomes important.
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Lodesman
post Fri, 17 Aug 2018 - 16:43
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QUOTE (Veglia @ Fri, 2 Jun 2017 - 17:04) *
I have since checked my speedo against a sat nav and find it over estimates by approx 20% (that may be another issue, but it does give a substantial margin for error).
Veglia


I wouldn't bring up the fact that your speedometer is 20% in error, that may be an offence in itself.

As I understand it, the regs for a speedometer allow for 10% variation in accuracy from the manufacturer and, as your speedometer must never under read, most over read by ≤10% when new.

I'm sure there are others here who can quote you chapter and verse regarding this.

This post has been edited by Lodesman: Fri, 17 Aug 2018 - 16:58
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southpaw82
post Fri, 17 Aug 2018 - 17:05
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You may wish to read this post.


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Any comments made do not constitute legal advice and should not be relied upon. No lawyer/client relationship should be assumed nor should any duty of care be owed.
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Jlc
post Fri, 17 Aug 2018 - 17:20
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QUOTE (peterguk @ Fri, 17 Aug 2018 - 17:30) *
An out of date calibration certificate does not automatically invalidate the device.
How do you know you have the most up-to-date certs?

The certificate itself is in date. But the angle is whether an instrument used in that process was 'in date', i.e. the 'Road Wheel'.

I very much doubt that the specific instrument has such a requirement.

A SPECS system is going to be very hard to challenge. After all the car was speeding and a technical defence is being sought.

However, if you could show the distance used was wrong then that could be a different matter. (Alas, I suspect any such measurement would prove the allegation)

This post has been edited by Jlc: Fri, 17 Aug 2018 - 17:21


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Private Parking - remember, they just want your money and will say almost anything to get it.
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NewJudge
post Fri, 17 Aug 2018 - 17:33
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What made you seek out these certificates?
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Spandex
post Fri, 17 Aug 2018 - 20:36
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The baseline distance was measured on 04/04/2017, presumably using the road wheel and within a year of the road wheels calibration date.

I would say this calibration looks valid.
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Churchmouse
post Fri, 17 Aug 2018 - 21:51
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QUOTE (NewJudge @ Fri, 17 Aug 2018 - 17:33) *
What made you seek out these certificates?

Perhaps it was all those successful court cases where the calibration defense has triumphed?

(Where are those cases detailed? I can't think of any off-hand...)

--Churchmouse
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