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  3. Average Speed Cameras

Average Speed Cameras

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  • R Russell Jones

    A lot of people have gps which gives a much more accurate (and higher) reading than a car speedo and then use the margin of error that the police have to give on top of that. Also some people don't understand what average means, I've seen loads of people slamming on the anchors as they come up to the exit camera. That said I'd love to find a form of average that puts your speed under the limit but I guess plod wouldn't have found the idea of "Mean speed cameras" very appealing ;-) Quite a neat trick that I saw someone do was to fly down the outside lane and pull in just behind a transit when he was pulling up to the camera (obviously I wouldn't condone this behaviour, it's dangerous and illegal blah blah) Most of the average speed cameras are front facing so bikers clearly couldn't give a tinker's cuss about them

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    hairy_hats
    wrote on last edited by
    #18

    GPS actually give a lower (more accurate) reading that speedos, which are designed to over-estimate.

    I hope you realise that hamsters are very creative when it comes to revenge. - Elaine

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    • S senorbadger

      Hi people. Just been reading up on average speed cameras. What suprises me is the number of people I see fly past me on the motorway when we're in a area controlled by them when i'm doing dead on the speed limit. Is there something i'm missing, like does it take a snapshot at each camera and use those to compute the average snapshot speed? or are all these people waking up to nasty fines and points on their licences?

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      moon_stick
      wrote on last edited by
      #19

      Going slightly off-topic here; I'm used to seeing the normal Gatso cameras with 10 yards or so of white markings on the road, but over the past year or so I see front facing cameras with 3 lines painted on the road covering about 1 foot. Are these actually speed cameras or are they ANPR checks for road tax etc??

      It definitely isn't definatley

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      • H hairy_hats

        GPS actually give a lower (more accurate) reading that speedos, which are designed to over-estimate.

        I hope you realise that hamsters are very creative when it comes to revenge. - Elaine

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        Russell Jones
        wrote on last edited by
        #20

        Doh, That's what I meant to say :zzz: You go faster for the same indicated speed

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        • M moon_stick

          Going slightly off-topic here; I'm used to seeing the normal Gatso cameras with 10 yards or so of white markings on the road, but over the past year or so I see front facing cameras with 3 lines painted on the road covering about 1 foot. Are these actually speed cameras or are they ANPR checks for road tax etc??

          It definitely isn't definatley

          D Offline
          D Offline
          Dan_Martin
          wrote on last edited by
          #21

          They're forward facing speed cameras I believe.

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          • M moon_stick

            Going slightly off-topic here; I'm used to seeing the normal Gatso cameras with 10 yards or so of white markings on the road, but over the past year or so I see front facing cameras with 3 lines painted on the road covering about 1 foot. Are these actually speed cameras or are they ANPR checks for road tax etc??

            It definitely isn't definatley

            H Offline
            H Offline
            hairy_hats
            wrote on last edited by
            #22

            Probably positioned so they can take a photo of the driver.

            I hope you realise that hamsters are very creative when it comes to revenge. - Elaine

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            • H hairy_hats

              Probably positioned so they can take a photo of the driver.

              I hope you realise that hamsters are very creative when it comes to revenge. - Elaine

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              Dalek Dave
              wrote on last edited by
              #23

              Which, under data protection law means they cannot be used in evidence. (In fact no camera evidience is admissible as it is digital, which is why you have to sign the back of the NIP form they send you, that is what they use to prosecute.) Strange thing law, especially when it is designed by unelected morons in foreign countries.

              ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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              • S senorbadger

                Hi people. Just been reading up on average speed cameras. What suprises me is the number of people I see fly past me on the motorway when we're in a area controlled by them when i'm doing dead on the speed limit. Is there something i'm missing, like does it take a snapshot at each camera and use those to compute the average snapshot speed? or are all these people waking up to nasty fines and points on their licences?

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                L Offline
                Lost User
                wrote on last edited by
                #24

                Ones in the UK use number plate recognition and average over (I think) at least three cameras. This means it's no good switching lanes which some idiots try. I've seen average speed limits around roadworks which is a very good use of them BTW, over 100 motorway mantenance workers are killed every year by motorists. Elaine :rose:

                Visit http://www.notreadytogiveup.com/[^] and do something special today.

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                • T Tom Deketelaere

                  Here it depends on what car your driving ;P No not really, the fact is tho the newer the car the closer to your actual speed is displayed, my car has the 10% rule (it says I'm driving 50 while I'm actually doing 34 45). The camera's don't take that 10% into account, only the +3mph (or 5km/h), at least for as far as I know. I do know that some camera's (at intersections with lights) will only register when your driving thru a red light. Also if your speeding and the picture shows that your where breaking at the time (so your break lights are on) they will add 5km/h to the speed registered. (at least here they do) [edit] corrected typo [/edit]

                  modified on Monday, August 17, 2009 6:17 AM

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                  Luc Pattyn
                  wrote on last edited by
                  #25

                  You seem to know an awful lot about this subject... :^)

                  Luc Pattyn [Forum Guidelines] [My Articles]


                  The quality and detail of your question reflects on the effectiveness of the help you are likely to get. Show formatted code inside PRE tags, and give clear symptoms when describing a problem.


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                  • L Lost User

                    Ones in the UK use number plate recognition and average over (I think) at least three cameras. This means it's no good switching lanes which some idiots try. I've seen average speed limits around roadworks which is a very good use of them BTW, over 100 motorway mantenance workers are killed every year by motorists. Elaine :rose:

                    Visit http://www.notreadytogiveup.com/[^] and do something special today.

                    C Offline
                    C Offline
                    c2423
                    wrote on last edited by
                    #26

                    Trollslayer wrote:

                    average over (I think) at least three cameras.

                    Surely more then 3 cameras give better accuracy? If averages are taken between pairs of cameras, and then an average of those values is taken again then you get a more accurate result as exact positioning of the cameras is less relevant. Where am I wrong?

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                    • L Luc Pattyn

                      You seem to know an awful lot about this subject... :^)

                      Luc Pattyn [Forum Guidelines] [My Articles]


                      The quality and detail of your question reflects on the effectiveness of the help you are likely to get. Show formatted code inside PRE tags, and give clear symptoms when describing a problem.


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                      Tom Deketelaere
                      wrote on last edited by
                      #27

                      Connections, connections ;P No I'v had 2 or 3 tickets so far ( only 1 for speeding tho). But half of my family works for different government agency's and a friend is a cop (o sorry police agent) so from time to time I hear some things. :)

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                      • C c2423

                        Trollslayer wrote:

                        average over (I think) at least three cameras.

                        Surely more then 3 cameras give better accuracy? If averages are taken between pairs of cameras, and then an average of those values is taken again then you get a more accurate result as exact positioning of the cameras is less relevant. Where am I wrong?

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                        martin_hughes
                        wrote on last edited by
                        #28

                        c2423 wrote:

                        Where am I wrong?

                        In your assumption that the law is interested in accuracy, instead of just having enough evidence - that you'd find it almost impossible to dispute - to take your money from you ;)

                        Books written by CP members

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                        • M martin_hughes

                          c2423 wrote:

                          Where am I wrong?

                          In your assumption that the law is interested in accuracy, instead of just having enough evidence - that you'd find it almost impossible to dispute - to take your money from you ;)

                          Books written by CP members

                          C Offline
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                          c2423
                          wrote on last edited by
                          #29

                          Yet again, I've been thinking about things too much. Or maybe I haven't? :doh:

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                          • M moon_stick

                            Going slightly off-topic here; I'm used to seeing the normal Gatso cameras with 10 yards or so of white markings on the road, but over the past year or so I see front facing cameras with 3 lines painted on the road covering about 1 foot. Are these actually speed cameras or are they ANPR checks for road tax etc??

                            It definitely isn't definatley

                            S Offline
                            S Offline
                            Stuart Dootson
                            wrote on last edited by
                            #30

                            moon_stick wrote:

                            3 lines painted on the road

                            Not 3 lines painted on the road - 3 wires buried under the road that measure your speed. Sounds like a Truvelo[^].

                            Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

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                            • S senorbadger

                              Hi people. Just been reading up on average speed cameras. What suprises me is the number of people I see fly past me on the motorway when we're in a area controlled by them when i'm doing dead on the speed limit. Is there something i'm missing, like does it take a snapshot at each camera and use those to compute the average snapshot speed? or are all these people waking up to nasty fines and points on their licences?

                              S Offline
                              S Offline
                              Stuart Dootson
                              wrote on last edited by
                              #31

                              I don't think you're missing anything - but that's why I also stick to the limit through average cameras! However - I stick to the limit as measured by a) my GPS device, and b) the average speed functionality in my car's trip computer - those two agree and indicate a higher speed (by 3-4 mph) than the speedometer, so that's what I stick to. As I've not been pinged in roadworks (touch wood), I think my strategy is valid.

                              Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

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