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spook51
Lifetime Member
Joined: Mar 26, 2004
Posts: 542
Location: East Midlands
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 Posted: Tue Feb 16, 2010 8:35 am Post subject: |
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| DennisN wrote: | | JaTe wrote: | | Yet you found it fine to criticise me |
Don't worry about it John - Verifiers and Moderators are   fair game! |
Only those who are curmudgeonly, opinionated, drift off topic and waffle but I'm sure there aren't any like that, they're all  - aren't they? |
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DennisN
Tired Old Man
Joined: Feb 27, 2006
Posts: 12254
Location: Keynsham
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| Posted: Tue Feb 16, 2010 9:49 am Post subject: |
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| spook51 wrote: | | DennisN wrote: | | JaTe wrote: | | Yet you found it fine to criticise me |
Don't worry about it John - Verifiers and Moderators are fair game! |
Only those who are curmudgeonly, opinionated, drift off topic and waffle but I'm sure there aren't any like that, they're all - aren't they? |
Well, JaTe is well known for curmudgeonlyness, being opinionated, drifting off topic and waffling. It would be self-opinionated to speak for myself.
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Dennis
No TT MapShare (voluntarily), HD Traffic (involuntarily)
TT Support 08451610009 - A) issue, B) challenge, C) problem, D) cockup |
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SteveMPS
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Joined: Jan 30, 2010
Posts: 51
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| Posted: Tue Feb 16, 2010 1:27 pm Post subject: |
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| JaTe wrote: | | . . Yet you found it fine to criticise me for looking at the cameras . . . |
[K5 mode] moi? [/K5 mode]
Actually I didn't, just expressed a hope IF you were looking intense enough to spot the fictional "ruddy great cameras" that I couldn't see with safe observation in slow traffic but we digress.
FWIW I found it's easier and safer spotting the later cams as you can look down on them from the bridge.
As a mod on two other forums I plead guilty to "curmudgeonlyness, being opinionated, drifting off topic and waffling" |
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SteveMPS
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Joined: Jan 30, 2010
Posts: 51
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| Posted: Tue Feb 16, 2010 8:36 pm Post subject: |
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| DennisN wrote: | | All of you can look really closely to identify exactly where the 40mph starts - at the last 50 cam or in the middle between it and the 40 cam (which would make 40 average impossible to monitor). That'd be more useful than clarifyinging the particular shade of yellow. |
As of 6pm tonight the 40mph signs are exactly 250 yards before the last (40) cam. |
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DennisN
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Joined: Feb 27, 2006
Posts: 12254
Location: Keynsham
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| Posted: Wed Feb 17, 2010 12:19 am Post subject: |
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| SteveMPS wrote: | | DennisN wrote: | | All of you can look really closely to identify exactly where the 40mph starts - at the last 50 cam or in the middle between it and the 40 cam (which would make 40 average impossible to monitor). That'd be more useful than clarifyinging the particular shade of yellow. |
As of 6pm tonight the 40mph signs are exactly 250 yards before the last (40) cam. |
I think we were hoping for the proximity to the preceding 50mph camera so I'm still not sure. Using a bent paperclip on our map (there are other methods which probably work!), I estimate the distance from 50 cam to 40 cam as 500 yards (assuming we have them 100% accurately positioned), so your 250yds places the change of speed limit halfway between them. I dunno how they can enforce a 40mph average there.
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Dennis
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SteveMPS
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Joined: Jan 30, 2010
Posts: 51
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| Posted: Wed Feb 17, 2010 1:36 am Post subject: |
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 just how was I supposed to measure the distance back to the previous cam Dennis?
What I did was clock the reading on the Tom Tom to next cam. The Lat Lons of the two cams will let you get the distance back better than your bent paper clip but I wouldn't argue with your 250 yards estimate.
Probably the most important speed limit on that whole M25/crossing ring road and if they really are std Specs cams, it's unenforceable - that's the 'wonderful' DofT for you. |
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Andy_P
Pocket GPS Moderator
Joined: Jun 04, 2005
Posts: 19389
Location: West and Southwest London
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| Posted: Wed Feb 17, 2010 2:16 am Post subject: |
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Are we maybe looking for problems/complications that aren't there?
So what, if the limit reduces to 40 just before the last camera?
If the entire set of SPECS is set to 50 it will catch anyone doing 50 (+the safety margin) through the whole system.
No-one has ever said they have to set the cameras at the exact same speed limit as the signs have they? (although setting them for 70 in a 50mph area would be a bit pointless!) |
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DennisN
Tired Old Man
Joined: Feb 27, 2006
Posts: 12254
Location: Keynsham
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| Posted: Wed Feb 17, 2010 2:35 am Post subject: |
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| SteveMPS wrote: | just how was I supposed to measure the distance back to the previous cam Dennis?
What I did was clock the reading on the Tom Tom to next cam. The Lat Lons of the two cams will let you get the distance back better than your bent paper clip but I wouldn't argue with your 250 yards estimate. |
I thought you only had an Inforad K1. If I'd known you have a TT with our cameras on, I'd have suggested you do exactly what you did!! In the absence of a TT, just a K1, I'd hoped you'd say the speed limit started "well after the last 50 cam, guess about halfway between the 50 and 40 cams", OR maybe "right alongside the last 50mph cam". Until you said 250 yds, I had no idea of the distance between the cameras and had to use my clunky paperclip reset tool to somehow get a measurement (500, not 250 - 250 was your distance) to compare with the scale line at the bottom of the map - it must be about as accurate as how far I think I can chuck a cheese!! I rather hoped somebody (M8TJT or MaFt) would come up with the distance as they seem able to do that sort of calculation from the coordinates - it's so far beyond me it's not even in view.
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Dennis
No TT MapShare (voluntarily), HD Traffic (involuntarily)
TT Support 08451610009 - A) issue, B) challenge, C) problem, D) cockup |
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Oldboy
Pocket GPS Moderator
Joined: Dec 08, 2004
Posts: 10201
Location: Suffolk, UK
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| Posted: Wed Feb 17, 2010 7:46 am Post subject: |
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| DennisN wrote: | | I rather hoped somebody (M8TJT or MaFt) would come up with the distance as they seem able to do that sort of calculation from the coordinates - it's so far beyond me it's not even in view. |
http://www.movable-type.co.uk/scripts/latlong.html 
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Richard
TT 910 V7.903 (9183/081205) OS:2344
Europe version 910.4895 |
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M8TJT
The Other Tired Old Man
Joined: Apr 04, 2006
Posts: 4829
Location: East Sussex, UK
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| Posted: Wed Feb 17, 2010 10:22 am Post subject: |
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| DennisN wrote: | | I rather hoped somebody (M8TJT or MaFt) would come up with the distance as they seem able to do that sort of calculation from the coordinates - it's so far beyond me it's not even in view. |
Easy to find the distance between the cams (you could possibly plot a route on one of your TTs), but I didn't know where the 40MPH limit started.
IF the cams were operational, which was originally the cut and thrust of the thread, presumably the last two cams would trap people doing over 50 betweenthe second last and last, regardless of the fact that the last cam is in a 40MPH. |
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Andy_P
Pocket GPS Moderator
Joined: Jun 04, 2005
Posts: 19389
Location: West and Southwest London
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| Posted: Wed Feb 17, 2010 12:32 pm Post subject: |
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| M8TJT wrote: | | presumably the last two cams would trap people doing over 50 betweenthe second last and last, regardless of the fact that the last cam is in a 40MPH. |
Thanks, that's what I was trying to say in my post.  |
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SteveMPS
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Joined: Jan 30, 2010
Posts: 51
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| Posted: Wed Feb 17, 2010 1:30 pm Post subject: |
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| Andy_P wrote: | Are we maybe looking for problems/complications that aren't there?
So what, if the limit reduces to 40 just before the last camera?
If the entire set of SPECS is set to 50 it will catch anyone doing 50 (+the safety margin) through the whole system. . . |
True from the drivers viewpoint but if I looked at it from the viewpoint of a toll booth attendant I might just want that 40mph limit properly monitored |
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DennisN
Tired Old Man
Joined: Feb 27, 2006
Posts: 12254
Location: Keynsham
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| Posted: Wed Feb 17, 2010 2:39 pm Post subject: |
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Yer all softies over there - the Severn Bridge toll booths (for Wales) only go down to 50!!
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Dennis
No TT MapShare (voluntarily), HD Traffic (involuntarily)
TT Support 08451610009 - A) issue, B) challenge, C) problem, D) cockup |
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SteveMPS
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Joined: Jan 30, 2010
Posts: 51
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| Posted: Wed Feb 17, 2010 6:31 pm Post subject: |
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| Yes but they're also a mile from the bridge Dennis |
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SteveMPS
Occasional Visitor
Joined: Jan 30, 2010
Posts: 51
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| Posted: Sat May 22, 2010 3:31 pm Post subject: |
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Should we celebrate the first anniversary of these white elephants?
Actually that was on May 9th but fact is they're still not turned on, they're still shown as active in the database, and the bridge authorities are still encouraging traffic to exceed 50 by having both their own and the police vehicles well exceed 50 etc etc |
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