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PostPosted: Thu Apr 06, 2006 22:33 
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Kind of related to my post about Aylesbury, since these were all over the town and surrounding areas recently and I wish I'd posted this then.

Basically, since the government and local councils llike to distort statistics on a regular basis, we should do the same for them.

So next time you see those two strips across the road, have a look to see if it's at a camera site, if so speed up (obviously don't get yourself done by the camera) and if no, slow down.

If enough people do this it will reduce the differences in average speeds at camera sites vs non camera sites and make them appear less effective.

What's your opinion, good idea or bad one?


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PostPosted: Thu Apr 06, 2006 22:41 
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Do they ever use these to try to lower limits by showing that the 85th percentile is X? If so, it could be a bad idea to artifically change this...


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PostPosted: Fri Apr 07, 2006 01:13 
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I tend to leave a gap so I can speed up by the ones near cameras, but they seem to have put all the newest Gatsos right over the strips, thus 'proving' that since the camera went in the average speed on the 'entire road' dropped and most people aren't speeding. :x

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PostPosted: Fri Apr 07, 2006 01:15 
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How about a campaign of reversing over them at 40mph?

Gatsos can't be used for photos travelling towards the camera :)


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PostPosted: Fri Apr 07, 2006 01:40 
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Lum wrote:
How about a campaign of reversing over them at 40mph?

Gatsos can't be used for photos travelling towards the camera :)

I don't know how complex the monitoring software is but it could probably see which direction you're travveling in even if you drive on the other side of the road.
Gatsos take 2 photos so it's show that you were travelling away from it, but that is an interesting point, what would happen if... :)

There's one on a hill around here...

Of course they would probably do you for "reversing further than is nesecary" :roll:

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PostPosted: Fri Apr 07, 2006 05:43 
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Lum wrote:
Kind of related to my post about Aylesbury, since these were all over the town and surrounding areas recently and I wish I'd posted this then.

Basically, since the government and local councils llike to distort statistics on a regular basis, we should do the same for them.


The also use them to "prove" the effectivness of speed cameras since I have seen them in mobile zones. I would rather prove that cameras don't slow traffic down.

I don't think that the occasional slow driver would affect the statistics.

If someone with a truck were to suddenly brake and lock the wheels up when driving over one there is a good chance they would be ripped off the road......shame

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PostPosted: Fri Apr 07, 2006 07:29 
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blackbird on another site, told a story of a cycle racing team who planned a route round town to take in as many gatsos as possible and then sprint through them at 40mph. the plod sent them photos and a letter :lol:

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PostPosted: Fri Apr 07, 2006 09:05 
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anton wrote:
blackbird on another site, told a story of a cycle racing team who planned a route round town to take in as many gatsos as possible and then sprint through them at 40mph. the plod sent them photos and a letter :lol:


The down-side to having a legal number plate. :lol:

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PostPosted: Fri Apr 07, 2006 09:54 
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You have to ensure everyone drives at the speed limit when crossing these strips; any faster and it might warrant speed enforcement, any lower might justify a speed limit reduction (which in turn could eventually lead to enforcement).


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 Post subject: Gatso line checker
PostPosted: Fri Apr 07, 2006 14:57 
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A Truck driver colleague at work has been refused a photo (Hard copy) from a Gatso camera
Taken by Cambridgeshire (Scmera) Police.
He has now obtained the photo under the FOA (Pleading not guilty)
The lines on the road are five (5) feet apart
In-between he two photos (0.5 Sec) he has passed Five lines.
The Gatso claims he was travelling at 51mph.
I have had a look at the ABD site (Gatso photo checking) and done my own calculation.
Would any of you guys tell me if you get around 40mph from the details I have stated here.
If so any one know a real good solicitor & expert line checker they could recommend that be in the Cambridge aria.
Thanks 


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PostPosted: Fri Apr 07, 2006 15:16 
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I make that 50 feet/sec = 34 mph.

Have you measured the lines by physically visiting the site? As there doesn't appear to be any standard spacing required.


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PostPosted: Fri Apr 07, 2006 15:19 
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I agree - the line spacings are the only possible variable here.

Time to get out the tape measure and make sure!

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 Post subject: Re: Gatso line checker
PostPosted: Fri Apr 07, 2006 15:22 
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Dead slow wrote:
A Truck driver colleague at work has been refused a photo (Hard copy) from a Gatso camera
Taken by Cambridgeshire (Scmera) Police.
He has now obtained the photo under the FOA (Pleading not guilty)
The lines on the road are five (5) feet apart
In-between he two photos (0.5 Sec) he has passed Five lines.
The Gatso claims he was travelling at 51mph.
I have had a look at the ABD site (Gatso photo checking) and done my own calculation.
Would any of you guys tell me if you get around 40mph from the details I have stated here.
If so any one know a real good solicitor & expert line checker they could recommend that be in the Cambridge aria.
Thanks 


five lines = 4 gaps? or five lines = 5 gaps?

if it's 5 gaps between lines, i.e. 25 feet travelled in 0.5 seconds then it's 34.29mph or thereabouts, if it's 4 gaps travelled in 0.5 seconds then it's 27.43 mph.

51mph is 37.2 feet travelled in half a second, I guess someone needs to measure the lines.

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 Post subject: Thank you all
PostPosted: Fri Apr 07, 2006 16:06 
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Fantastic help people. The said lines are on the A605 between the A14 & A1. Police call the site "Elton over bridge" NSL limit (40 for HGV)
The lines can be seen clearly using Google earth:
Pointer: 52.31.29.00 N_____0.21.27.98. W. Eye alt 462 feet.
The vehicle trailer has moved 5 gaps @ 5 feet. (May be 6 gaps to be really kind to them?)

All help is most gratefully received.


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PostPosted: Fri Apr 07, 2006 17:07 
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Doesnt this bit belong in "help I'm being prosecuted"?

This thread is about the black rubber strips they use for collecting statistics, not the gasto measurement lines.


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PostPosted: Fri Apr 07, 2006 20:13 
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Zamzara wrote:
I make that 50 feet/sec = 34 mph.

Have you measured the lines by physically visiting the site? As there doesn't appear to be any standard spacing required.


And the interval between photos can be up to 0.7 seconds, with no indication of what the actual timing is.


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PostPosted: Fri Apr 07, 2006 20:17 
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Homer wrote:
Zamzara wrote:
I make that 50 feet/sec = 34 mph.

Have you measured the lines by physically visiting the site? As there doesn't appear to be any standard spacing required.


And the interval between photos can be up to 0.7 seconds, with no indication of what the actual timing is.


And wasn't that what David Edgar was trying to prove until the "boys" got him? :( .

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PostPosted: Sat Apr 08, 2006 16:14 
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Homer wrote:
Zamzara wrote:
I make that 50 feet/sec = 34 mph.

Have you measured the lines by physically visiting the site? As there doesn't appear to be any standard spacing required.


And the interval between photos can be up to 0.7 seconds, with no indication of what the actual timing is.


And don't forget to ask for a calibration cert, with tracability of calibrating equipment back to a national source of reference, otherwise you might have calibrated the time period using any old stopwatch.

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PostPosted: Mon Apr 10, 2006 15:09 
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Dixie wrote:
And wasn't that what David Edgar was trying to prove until the "boys" got him? :( .

I fear, from other things that I've read and seen concerning said gentleman, that he did a very good job of "getting" himself... :-(

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PostPosted: Mon Apr 10, 2006 15:51 
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pogo wrote:
Dixie wrote:
And wasn't that what David Edgar was trying to prove until the "boys" got him? :( .

I fear, from other things that I've read and seen concerning said gentleman, that he did a very good job of "getting" himself... :-(


Why is that because he had the bottle to stand up and be counted, or because he could prove the flash interval on Gatso's are inaccurate? :)

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