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New Style Speed CAmeras on M6
Gaza
post Thu, 21 Nov 2019 - 09:59
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Been a while since I've been here. biggrin.gif

Looking for some advice on the new speed cameras on the M6 Smart Motorway between Stoke and Knutsford. These are the twin pair at the side of the road. I was driving northbound last night. The motorway was busy but traffic was flowing well and there were no speed restrictions in force. I was in Lane 4 having passed a line of vehicles in lane 3. As I was passing a set of cameras a car undertook me in lane 3 and there was a double flash for what seemed to be both cameras. I was travelling at more than the NSL but clearly the car in lane was doing more than me.

Anyone any idea how these work and determine what vehicle actually triggered them? What's more worrying for me is the fact they seem to be active even when there is no temp limit in place.
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post Thu, 21 Nov 2019 - 09:59
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BaggieBoy
post Thu, 21 Nov 2019 - 10:35
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If you mean the pair of cameras set just before a gantry, these are just to capture the state of the gantry displayed speed limits. The flash would have come from the HADECS3 unit mounted on the side of the gantry.
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Jlc
post Thu, 21 Nov 2019 - 13:13
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QUOTE (Gaza @ Thu, 21 Nov 2019 - 09:59) *
What's more worrying for me is the fact they seem to be active even when there is no temp limit in place.

Yes, some are configured to enforce NSL. They will trigger at 79mph.

QUOTE (Gaza @ Thu, 21 Nov 2019 - 09:59) *
Anyone any idea how these work and determine what vehicle actually triggered them?

Radar based and determine the lane in which the vehicle is speeding.


--------------------
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

Private Parking - remember, they just want your money and will say almost anything to get it.
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Gaza
post Thu, 21 Nov 2019 - 13:53
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QUOTE (BaggieBoy @ Thu, 21 Nov 2019 - 10:35) *
If you mean the pair of cameras set just before a gantry, these are just to capture the state of the gantry displayed speed limits. The flash would have come from the HADECS3 unit mounted on the side of the gantry.


It was pitch black so it would have come from cameras at the side of the sign. On this section of the M6 it isn't gantrys like on the M42 but large matrix signes at the side.

QUOTE (Jlc @ Thu, 21 Nov 2019 - 13:13) *
QUOTE (Gaza @ Thu, 21 Nov 2019 - 09:59) *
What's more worrying for me is the fact they seem to be active even when there is no temp limit in place.

Yes, some are configured to enforce NSL. They will trigger at 79mph.


Wasn't aware they were set to enforce NSL. We were both doing excess of 79mph. I had 90mph on my adaptive cruise so the car on the inside was certainly doing more than that. I normally sit at an indicated 80mph but having been held up significantly coming around Birmingham on the M5 and then endured what must be 25 miles of roadworks and average speed cameras where they are converting the M6 to Smart Motorway, I put the foot down a bit.

QUOTE (Jlc @ Thu, 21 Nov 2019 - 13:13) *
QUOTE (Gaza @ Thu, 21 Nov 2019 - 09:59) *
Anyone any idea how these work and determine what vehicle actually triggered them?

Radar based and determine the lane in which the vehicle is speeding.


I wonder if they can detect both cars at the same time?

This post has been edited by Gaza: Thu, 21 Nov 2019 - 13:54
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Jlc
post Thu, 21 Nov 2019 - 20:23
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QUOTE (Gaza @ Thu, 21 Nov 2019 - 13:53) *
I had 90mph on my adaptive cruise

You may well get a NIP then... 14 day wait if you are the registered keeper.

QUOTE (Gaza @ Thu, 21 Nov 2019 - 13:53) *
I wonder if they can detect both cars at the same time?

Yup it does.


--------------------
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

Private Parking - remember, they just want your money and will say almost anything to get it.
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baroudeur
post Fri, 22 Nov 2019 - 13:24
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QUOTE (Gaza @ Thu, 21 Nov 2019 - 13:53) *
QUOTE (BaggieBoy @ Thu, 21 Nov 2019 - 10:35) *
If you mean the pair of cameras set just before a gantry, these are just to capture the state of the gantry displayed speed limits. The flash would have come from the HADECS3 unit mounted on the side of the gantry.


It was pitch black so it would have come from cameras at the side of the sign. On this section of the M6 it isn't gantrys like on the M42 but large matrix signes at the side.

QUOTE (Jlc @ Thu, 21 Nov 2019 - 13:13) *
QUOTE (Gaza @ Thu, 21 Nov 2019 - 09:59) *
What's more worrying for me is the fact they seem to be active even when there is no temp limit in place.

Yes, some are configured to enforce NSL. They will trigger at 79mph.


Wasn't aware they were set to enforce NSL. We were both doing excess of 79mph. I had 90mph on my adaptive cruise so the car on the inside was certainly doing more than that. I normally sit at an indicated 80mph but having been held up significantly coming around Birmingham on the M5 and then endured what must be 25 miles of roadworks and average speed cameras where they are converting the M6 to Smart Motorway, I put the foot down a bit.

QUOTE (Jlc @ Thu, 21 Nov 2019 - 13:13) *
QUOTE (Gaza @ Thu, 21 Nov 2019 - 09:59) *
Anyone any idea how these work and determine what vehicle actually triggered them?

Radar based and determine the lane in which the vehicle is speeding.


I wonder if they can detect both cars at the same time?


Up to six lanes!
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The Rookie
post Sat, 23 Nov 2019 - 08:41
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If you had CC set to 90 there may well be more than 1 NIP on its way, there are multiple cameras up that stretch.


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