Author Topic: NIP but no camera calibration certificate  (Read 106 times)

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NIP but no camera calibration certificate
« on: January 29, 2024, 07:24:47 pm »
Hi guys,

I was sent an NIP for the average speed of 51mph in a 40 but upon looking at the evidence, the website has just provided pictures but no camera calibration certificate.

How do I go about requesting one and could this help me to provide any defence?

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Re: NIP but no camera calibration certificate
« Reply #1 on: January 29, 2024, 07:33:10 pm »
You could ask them. They might provide it (though don't have to).

If you took this to court (which is the only way to challenge a speeding charge and it would mean you declining any out of court offers) the police do not have to provide a calibration certificate. The device is assumed to be working properly unless the contrary can be shown. Average speed systems are extremely accurate. They simply detect vehicles via ANPR at the start and end of the stretch. The time between the two detections is measured and since the distance between the two is known, the average speed can be accurately calculated.

Do you have a reason to suspect the measured speed may be inaccurate?