Speed cam sensitivity
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Hey all,
Just wondering, how sensitive are speed cameras. Not that I speed past them but went past a digital 30mph camera the other day at about 31-32mph. And also been past a 40mph and about 42mph too. Just wondering if anyone knows as to how sensitive these cameras are programmed to be?[/i]
Just wondering, how sensitive are speed cameras. Not that I speed past them but went past a digital 30mph camera the other day at about 31-32mph. And also been past a 40mph and about 42mph too. Just wondering if anyone knows as to how sensitive these cameras are programmed to be?[/i]
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As far as i'm aware the digital ones don't read instantaneous speed or speed at all in fact as they just read your number plate. A second camera a known distance down the road reads your plate again and from the time taken between the two points your average speed is calculated.
Speed = distance / time.
QED.
Speed = distance / time.
QED.
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well it mustn't have been digital then cos I've seen this camera flash people before but it isn't a conventional speed cam, its smaller. Its got the lines on the road though and theres no camera in front so i guess just a normal speed cam that flashes. It didn't flash me though when I was going 31-32mph but I was wondering at how senistive they are i.e. what do they allow you to go up to before they flash you?
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some cameras are set more sensitive than others, there's a gatso close to me which is set at 42 in a 30, but i know of a few which are set to 33. ain't sure what the policy is on setting them, i guess each area's police force will have different policies.
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Originally Posted by satanoursaviour
some cameras are set more sensitive than others, there's a gatso close to me which is set at 42 in a 30, but i know of a few which are set to 33. ain't sure what the policy is on setting them, i guess each area's police force will have different policies.
theres one near my mates house set to 36mph and i have been caught by it at 36mph.... the ones near mine have been through at 40mph and no flash
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dont they have to give a 10% variance?? coz speedo's are set to a tolerance of 10%... that was a few years ago mind... so i dont know if modern ones are spot on... i know my speedo wobbles about like a plate ful of jelly... but thats a cable one... but i could be doing 33 or i could be doing 27...
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im pritty certain thats its up to the individual police force what they set them too. The guidence was 10% plus 1 mph. But i think they can do you for 31mph in a 30 etc if they wish.
Also what calibrated devices did you have setup to calculate your speeds when you say you were doing 31-32?
speedos are not exactly accurate in most cases. and nor are your average gps imo fo course.
Also what calibrated devices did you have setup to calculate your speeds when you say you were doing 31-32?
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#11
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Originally Posted by pani_k
apparently, if you ever get caught by a speed trap, if you say your speedo has a 10% error and their gun has a 5% error then you can get away with it. been told this by a friend.
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OK sir, i will report you to court for speeding and also a defective speedometer
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Originally Posted by rssteve
Originally Posted by pani_k
apparently, if you ever get caught by a speed trap, if you say your speedo has a 10% error and their gun has a 5% error then you can get away with it. been told this by a friend.
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OK sir, i will report you to court for speeding and also a defective speedometer
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Also, the speedometer in the car was reading about 32mph and I was just wondering whether thats enough for the cam to go off thats all.
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My dad got done on Otley Road at Headingley (Near Three Horseshoes/Woody's) doing 34mph in a 30
I got done at copy nook gate in Blackburn outside the garage doing 40 in a 30 so i've got no excuse whatsoever
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I got done at copy nook gate in Blackburn outside the garage doing 40 in a 30 so i've got no excuse whatsoever
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#14
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not all speedos have a 10% error
i think there may be something in the mot that says your cars speedo must be accurate within 10%, a guess tho. And there over read rather than under read for this reason. No offence ment just thought your post was funny
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#16
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No speed gun is going to have ANY ERROR, it works on the DOPPLER principal and they are tested before use EACH DAY, so that they are accurate, a not also has to be made in the PC's notebook.
Newer versions of the speed gun are merely pointed at a REFFERENCE PLATE on a wall in the Police station yard, this has been measured by a SURVEYOR and a certificate of distance issued, from then point at where to Pc holds the gun and the plate he points it at, the gun then calibrates itself.
Detection tolerances vary and is up to each individual force to set.
All those that say they know are guessing or a PC as they do NOT give out this info as it defeats the purpose!!
It can be assumed however that it is the advised limit of 10% + 3mph, as a minimum.
The ones with cameras at each end are called SPECS, which measure your average speed through a particular place such as roadworks etc, changing lanes does NOT have any effect despite what some say.
These will become more widespread as they read plates and we can all be watched more closely, looking for evidence of criminals movement, hence why the gov are considering driving bans for offences not involving the road!!
There is a smaller version of the speed camera appearing, which is about 1/2 the size of a shoe box, these do NOT have to be painted etc.
tabetha
Newer versions of the speed gun are merely pointed at a REFFERENCE PLATE on a wall in the Police station yard, this has been measured by a SURVEYOR and a certificate of distance issued, from then point at where to Pc holds the gun and the plate he points it at, the gun then calibrates itself.
Detection tolerances vary and is up to each individual force to set.
All those that say they know are guessing or a PC as they do NOT give out this info as it defeats the purpose!!
It can be assumed however that it is the advised limit of 10% + 3mph, as a minimum.
The ones with cameras at each end are called SPECS, which measure your average speed through a particular place such as roadworks etc, changing lanes does NOT have any effect despite what some say.
These will become more widespread as they read plates and we can all be watched more closely, looking for evidence of criminals movement, hence why the gov are considering driving bans for offences not involving the road!!
There is a smaller version of the speed camera appearing, which is about 1/2 the size of a shoe box, these do NOT have to be painted etc.
tabetha
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