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ANPR - questioning accuracy
bdotcdot
Posts: 4 Newbie
Hello parking ticket fighters,
This may be useful for others or may have already been raised by others. I recently challenged a parking company to confirm their camera calibration. Rather than doing so, they simply waived the charge. It may be useful to others.
Background: Charged for overstay in a supermarket carpark using ANPR.
PPC: Horizon
Appeal wordings (in addition to standard signage, denial of liability and not identifying the driver):
I contest that your sensors are not calibrated to accurate time standards. You have also not shown that the time stated was securely stamped on the photographs by the sensor and not manually placed by a third party software or an individual. Please provide suitable documentation of your camera and timing calibration meeting home office CAST guidelines and ANPR standards if you want to contest this. I would need confirmation through calibration documentation that the time stamp is indeed made by the machine and cannot be tampered. I also contest that the timing has been tampered with and hence you need to provide the details of the encryption standards, its implementation, testing and calibration.
Rationale: Calibration standards are difficult to maintain. But more importantly, it is very difficult to show the number and date has not been tampered with.
Result: PCN was cancelled
I hope it helps others.
This may be useful for others or may have already been raised by others. I recently challenged a parking company to confirm their camera calibration. Rather than doing so, they simply waived the charge. It may be useful to others.
Background: Charged for overstay in a supermarket carpark using ANPR.
PPC: Horizon
Appeal wordings (in addition to standard signage, denial of liability and not identifying the driver):
I contest that your sensors are not calibrated to accurate time standards. You have also not shown that the time stated was securely stamped on the photographs by the sensor and not manually placed by a third party software or an individual. Please provide suitable documentation of your camera and timing calibration meeting home office CAST guidelines and ANPR standards if you want to contest this. I would need confirmation through calibration documentation that the time stamp is indeed made by the machine and cannot be tampered. I also contest that the timing has been tampered with and hence you need to provide the details of the encryption standards, its implementation, testing and calibration.
Rationale: Calibration standards are difficult to maintain. But more importantly, it is very difficult to show the number and date has not been tampered with.
Result: PCN was cancelled
I hope it helps others.
0
Comments
-
Well done. What is the name of the PPC please? Some will no doubt say it's commercially sensitive and bludgeon on regardless. Others may think, this is too complicated so we will give up.I married my cousin. I had to...I don't have a sister.
All my screwdrivers are cordless."You're Safety Is My Primary Concern Dear" - Laks0 -
Well done, this can be used in all ANPR because we know they are not accurate.
Help us more ,,,, which parking company and which retailer0 -
Sorry guys, forgot in the original post.
It is Horizon parking.0 -
Sorry guys, forgot in the original post.
It is Horizon parking.
Please add that to your original post, and add to the title something to the effect that the PCN was cancelled as a result.I married my cousin. I had to...I don't have a sister.All my screwdrivers are cordless."You're Safety Is My Primary Concern Dear" - Laks0 -
Yes well done on a great result, without wanting to sound sceptical I think there was more luck involved than skill. If the PPC was one of the more vicious scammers they would have ignored your request (as many do!!!) and ploughed on with the usual multitude of debt crawler letters followed by a Court claim.
But hey a win is a win, I'll take a win in whatever shape or form its in any day0
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