M25 and M1 Cameras
Discussion
neverraced said:
I've owned over 50 cars and tested the accuracy of the speedo on most of them; I'm yet to find an accurate one! They all build in a 1-4% idiots' margin it seems.
Nothing to do with idiot margin. Speedo manufacturers aren't allowed to make them totally 'accurate'. They must over read slightly to take into account any design/manufacturing tolerances that might otherwise make them under read, which is considered dangerous and may leave them liable to all sorts of litigation should somebody get hurt if the speedo was found to be a factor.GR_TVR said:
kerplunk said:
FurtiveFreddy said:
kerplunk said:
There was a camera flashing busily on the newly opened up stretch of M1 around Northampton yesterday evening - I think it may have got me! I was doing about 80 and there was no reduced speed limit operating.
This is common when SMART sections are becoming live. It's either something to do with testing/calibration or it's just set lower to warn motorists the cameras are becoming operational. Happened on the M25 and M3 when the HADECS3s were first installed.If you were doing 80 and there was no VSL, I wouldn't worry about it.
I'll report back in a couple of weeks to say if I received anything...!
FurtiveFreddy said:
The cameras around Bristol have been known to issue at these sorts of speeds.
Anyway, how dangerous is that? 81 in those conditions! Disgraceful
Yes they are constantly live as the Chief Constable and the PCC like the money it raises from the speed awareness course they share in. I have posted before the email from the PCC explaining the split of cash. Anyway, how dangerous is that? 81 in those conditions! Disgraceful
These cameras catch a huge amount of tourists going too and from the West Country using 10% error so 77 MPH. It is the way t is going and the more "smart" motorways the more they will compare notes and see what they are missing.
The only thing about these cameras is they caught a guy I know who runs a Camera vigilante group in Chipping Sodbury. He was so happy to dob people to the police as speeding was such a bad thing. When his wife told me he had been caught I waited for his next proclamation on speeding to ask him to explain his actions, it was fun
BertBert said:
Looks like a nice bit of MLM'ing going on there!
You blind? Looks like he's just about to overtakeraddog said:
Interesting to see, friend of mine got a ticket when the "National Limit Applies" isn't displayed, so at least in Bristol Area these run 24\7, looking like 10%+2mph as well. Here's the proof.
Jdjd1 said:
BertBert said:
Looks like a nice bit of MLM'ing going on there!
You blind? Looks like he's just about to overtakeraddog said:
Interesting to see, friend of mine got a ticket when the "National Limit Applies" isn't displayed, so at least in Bristol Area these run 24\7, looking like 10%+2mph as well. Here's the proof.
kmpowell said:
For those that might not be aware, it's not just the top gantry cameras you have to really worry about anymore, it's the new HADEC 3 cameras that are mounted to the side of the gantries, usually on gantries that have no top cameras. They are permanently live...
The little buggers are all the way around the M25. Here's how they work...
https://www.speedcamerasuk.com/hadecs-3.htm
The HADECS2 on the gantry tops have been off for a while, they’re just housings, the gubbins have all been removed. There was also only one camera in each gantry anyway, generally Lane 1 or Lane 2 as it was an expensive option to put 3, 4 or 5 cameras on each gantry. Where you see HADECS2 and there is no HADECS3 on the same gantry, don’t worry about getting caught.The little buggers are all the way around the M25. Here's how they work...
https://www.speedcamerasuk.com/hadecs-3.htm
The lines on the road used by the HADECS2 are also redundant. The HADECS3 uses dual radar, tracking and speed, to determine speed and position at two points, so don’t take indication of no speed marker lines as the camera being inactive.
HADECS3 have always been on, it’s a myth that they only turn on when it’s a variable limit. When there is no limit variably displayed at all and the signs are unlit, the limit is 70mph and will trigure if the threshold is broken.
The local police force can choose to turn on or off the cameras at any time to save generating too many fines to handle. The variable limit could be displayed but the camera might be off, or in maintenance mode for tech issues or training. The thresholds on the camera can also be adjusted, so they might display the limit at 50mph but the camera won’t trigure until 55mph, or NSL might not be set until over 120mph so that only the heavy speeders are caught. The strategy for enforcement is entirely up to the local constabulary.
Advice? Where you see HADECS3, do the posted limit or no more than 70mph if NSL. Risk it if you like.
The best indication of spotting HADECS3 if you miss the yellow pods on the gantry is to spot the aspect cameras about 200m prior to the gantry. These cameras are watching the variable limits to determine at what threshold the system is to implement speed capture, if the cameras are on. You’ll never know if they are or aren’t.
Edited by Swole on Thursday 22 February 14:08
Swole said:
The best indication of spotting HADECS3 if you miss the yellow pods on the gantry is to spot the aspect cameras about 200m prior to the gantry. These cameras are watching the variable limits to determine at what threshold the system is to implement speed capture, if the cameras are on. You’ll never know if they are or aren’t.
I think (so not 100% certain) there are some HADECS3 on the M1 near Sheffield on gantries without variable speed limit signs so no aspect cameras. I'll check the next time I'm passing but that might not be for a while.Edited by Swole on Thursday 22 February 14:08
Swole said:
kmpowell said:
For those that might not be aware, it's not just the top gantry cameras you have to really worry about anymore, it's the new HADEC 3 cameras that are mounted to the side of the gantries, usually on gantries that have no top cameras. They are permanently live...
The little buggers are all the way around the M25. Here's how they work...
https://www.speedcamerasuk.com/hadecs-3.htm
The HADECS2 on the gantry tops have been off for a while, they’re just housings, the gubbins have all been removed. There was also only one camera in each gantry anyway, generally Lane 1 or Lane 2 as it was an expensive option to put 3, 4 or 5 cameras on each gantry. Where you see HADECS2 and there is no HADECS3 on the same gantry, don’t worry about getting caught.The little buggers are all the way around the M25. Here's how they work...
https://www.speedcamerasuk.com/hadecs-3.htm
The lines on the road used by the HADECS2 are also redundant. The HADECS3 uses dual radar, tracking and speed, to determine speed and position at two points, so don’t take indication of no speed marker lines as the camera being inactive.
HADECS3 have always been on, it’s a myth that they only turn on when it’s a variable limit. When there is no limit variably displayed at all and the signs are unlit, the limit is 70mph and will trigure if the threshold is broken.
The local police force can choose to turn on or off the cameras at any time to save generating too many fines to handle. The variable limit could be displayed but the camera might be off, or in maintenance mode for tech issues or training. The thresholds on the camera can also be adjusted, so they might display the limit at 50mph but the camera won’t trigure until 55mph, or NSL might not be set until over 120mph so that only the heavy speeders are caught. The strategy for enforcement is entirely up to the local constabulary.
Advice? Where you see HADECS3, do the posted limit or no more than 70mph if NSL. Risk it if you like.
The best indication of spotting HADECS3 if you miss the yellow pods on the gantry is to spot the aspect cameras about 200m prior to the gantry. These cameras are watching the variable limits to determine at what threshold the system is to implement speed capture, if the cameras are on. You’ll never know if they are or aren’t.
Edited by Swole on Thursday 22 February 14:08
Swole said:
kmpowell said:
For those that might not be aware, it's not just the top gantry cameras you have to really worry about anymore, it's the new HADEC 3 cameras that are mounted to the side of the gantries, usually on gantries that have no top cameras. They are permanently live...
The little buggers are all the way around the M25. Here's how they work...
https://www.speedcamerasuk.com/hadecs-3.htm
The HADECS2 on the gantry tops have been off for a while, they’re just housings, the gubbins have all been removed. There was also only one camera in each gantry anyway, generally Lane 1 or Lane 2 as it was an expensive option to put 3, 4 or 5 cameras on each gantry. Where you see HADECS2 and there is no HADECS3 on the same gantry, don’t worry about getting caught.The little buggers are all the way around the M25. Here's how they work...
https://www.speedcamerasuk.com/hadecs-3.htm
The lines on the road used by the HADECS2 are also redundant. The HADECS3 uses dual radar, tracking and speed, to determine speed and position at two points, so don’t take indication of no speed marker lines as the camera being inactive.
HADECS3 have always been on, it’s a myth that they only turn on when it’s a variable limit. When there is no limit variably displayed at all and the signs are unlit, the limit is 70mph and will trigure if the threshold is broken.
The local police force can choose to turn on or off the cameras at any time to save generating too many fines to handle. The variable limit could be displayed but the camera might be off, or in maintenance mode for tech issues or training. The thresholds on the camera can also be adjusted, so they might display the limit at 50mph but the camera won’t trigure until 55mph, or NSL might not be set until over 120mph so that only the heavy speeders are caught. The strategy for enforcement is entirely up to the local constabulary.
Advice? Where you see HADECS3, do the posted limit or no more than 70mph if NSL. Risk it if you like.
The best indication of spotting HADECS3 if you miss the yellow pods on the gantry is to spot the aspect cameras about 200m prior to the gantry. These cameras are watching the variable limits to determine at what threshold the system is to implement speed capture, if the cameras are on. You’ll never know if they are or aren’t.
Edited by Swole on Thursday 22 February 14:08
5/10 well done.
jm doc said:
If they use radar then it is possible to know if they are on.
It is but as they are directional and your radar detector is on your car then you will either be in the beam being measured when you pick it up or are on the other side of the road where they will measure no speed.Unless you go round plotting everywhere your radar detector alarms there is little point in them.
Hopefully they will be efficiently outlawed soon.
ghe13rte said:
jm doc said:
If they use radar then it is possible to know if they are on.
It is but as they are directional and your radar detector is on your car then you will either be in the beam being measured when you pick it up or are on the other side of the road where they will measure no speed.Unless you go round plotting everywhere your radar detector alarms there is little point in them.
Hopefully they will be efficiently outlawed soon.
jm doc said:
If they use radar then it is possible to know if they are on.
The radars are always on, as the power is always connected. It depends whether or not the police activate them in the back office, or rather click the button that arms/sets to enforce. The system is generally always detecting and capturing speed in a log file, but just not taking photos, unless the power is off or in maintenance. I used to love sitting roadside with these things when the flash was being tested, and watching the reaction of the traffic, oblivious to the standard of their driving, or life itself until the sky lit up in two sharp bursts.
ghe13rte said:
There are quite a few technical error in the description you provide and in the one at the link. It is the closest anyone has been though.
5/10 well done.
I’m not sure what this is supposed to mean. Please say how they work if you know better :-/.5/10 well done.
Edited by Swole on Thursday 22 February 21:48
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