Speed Cameras
- Thread starter fish_dan
- Start date
More surprised that anyone can believe that the speed limit would be different in the "fast" lane.
However, chances are you're fine. As already mentioned, speedos over-read so chances are that your 75mph indicated is more like 71-72mph. Most forces do use the 10%+2 guidelines though not all have to but I still wouldn't be worried about even 75ish actual in a 70.
Edit: Of course, that's assuming the variable speed limit signs on the gantries weren't actively displaying something else.
However, chances are you're fine. As already mentioned, speedos over-read so chances are that your 75mph indicated is more like 71-72mph. Most forces do use the 10%+2 guidelines though not all have to but I still wouldn't be worried about even 75ish actual in a 70.
Edit: Of course, that's assuming the variable speed limit signs on the gantries weren't actively displaying something else.
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This thread scares and amuses me in equal measure
Indeed.
Get to 70mph variable speed limit, enable adaptive cruise control at 70. Relax and scroll through twitter on your phone.
In Bedfordshire the police wanted to start fining people for going 71 with average speed cameras and they were told to jog on by the government. So there is definitely some leeway. I think they usually allow up to 79 before you get a fine.
The cameras are not 100% accurate, so if they cut it too fine it probably won't stick.
The cameras are not 100% accurate, so if they cut it too fine it probably won't stick.
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I was told that the HADECS cameras on the M25 aren't triggered below 85mph if the variable signs are not active, according to someone I know who works as an engineer in that area. I'm wondering if these are the same cameras the OP went through on the M1, hence asking about the status of the signs.
I would really take that with a pinch (mountain) of salt.
I'm not going to test it. But I drive past them every evening and I've seen people passing through the gantries at what seems to be 80+ and not seen them flash when the signs aren't illuminated. That's why every HADECS gantry is preceeded by a set of CCTV cameras pointing at the front of the gantry...each offence is cross referenced against an image of the variable matrix sign to ensure that it is fully functioning and illuminated at the time the car passed.
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Soldato
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- 13 Jan 2010
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You you were in the fast lane you'll be fine
In case you have any more questions
https://www.speedcamerasuk.com/hadecs-3.htm
If I ever see one of those new hadecs3 cameras i always ensure i *continue* at the safe speed of 70mph indicated through the gantry, just to be sure like .
https://www.speedcamerasuk.com/hadecs-3.htm
If I ever see one of those new hadecs3 cameras i always ensure i *continue* at the safe speed of 70mph indicated through the gantry, just to be sure like .
This^
My speedometer over reads by around 3mph so if I cruise at an indicated 80mph im actually only doing around 77mph and never get a ticket.
I always drive through speed cameras in 30 limits at an indicated 35mph (actual 32mph) and they never flash.
As already mentioned on this thread no one in the history of the internet has been able to provide proof of being done for doing less than 10%+2 over the limit
Agreed, I often tuck in behind a truck doing 53-55mph GPS through a long, temp 50 limit and overtake a ton of people doing 50 indicated.
Soldato
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- 1 May 2013
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- M28
Where did you get that the cameras are not accurate from?
I always figured this was just a case of trucks having bigger wheels, so their indicated 50, is probably around 46 on a car.
It does get rather annoying when you're doing about 51 (GPS), actually overtaking cars on the inside, yet you have some truck trying to climb into your boot.
Soldato
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- 1 May 2013
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Won't each vehicles speedometer will be calibrated to the factory fitted wheel size? so it shouldn't matter on vehicle size.
They aren't 100%. Plus how well they have been calibrated is also a factor.
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Trucks tachographs are indeed calibrated whereas cars speedometers are not, I often pass cars with digital speed displays at night when I'm doing 55mph (speed limited in my HGV) to notice the car reading anywhere from 53 - 63mph!