Average SpeedCamera's SpeedSpike
Average SpeedCamera's SpeedSpike
Author
Discussion

Rowanosborne

Original Poster:

21 posts

188 months

Sunday 30th March 2014
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Looking for some information really from someone who may have an idea how these work.

In my local town there setup as Camera, traffic light, camera, traffic light, camera, traffic light, camera

Now in my eyes how does this system catch speeders flouting the average 30mph if your stopping for lights as the sequencing on these lights isn't the same round the clock etc. As i don't believe a camera could compensate for stoppages at red lights?

Any knowledge on these would be appreciated

10 Pence Short

32,880 posts

248 months

Sunday 30th March 2014
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Grimsby?

If not there's a similar setup there and I wondered how it works.

Rowanosborne

Original Poster:

21 posts

188 months

Sunday 30th March 2014
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It is indeed Grimsby yes, I often sit and wonder how they work as variables of the lights could be very different for each car.

The lights do and will change depending on what traffic is sitting there as they should so they can't be timed for lights etc?

10 Pence Short

32,880 posts

248 months

Sunday 30th March 2014
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I saw that the reaction to some 'VIP' locals being caught there, is to suggest that the 30mph limit that was so important to enforce it required cameras, needs raising to 40mph. Bonkers.

Rowanosborne

Original Poster:

21 posts

188 months

Sunday 30th March 2014
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Im happy with the limit i mean, technically you can still burn people off the lights provided you keep your speed under 30mph. But this is why i question it.. If iv burned someone off a set of lights after being sat there for 2 mins, surely my average speed has dropped that much i could go launching my car to 50mph (provided the camera's have no radar or laser) and my average speed would still be 30mph or less?

Durzel

13,029 posts

199 months

Sunday 30th March 2014
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Is "burning people off at the lights" something you actually do, or is it hypothetical. If it's the latter, surely the cameras are irrelevant?

Rowanosborne

Original Poster:

21 posts

188 months

Sunday 30th March 2014
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Practically irrelevant to me i have a clean license. Just curious on how these work as i didn't believe the laws of averaging would work properly with lights unless there somehow offset for the lights but then how would they work out acceleration speed off the lights being higher for say a high performance car which will do 0-30 in seconds as to someone in a 1L car doing 0-30 over 10 seconds or more.

CharlieBangBang

36 posts

154 months

Sunday 30th March 2014
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The averaging law will work with the lights. If you stop at the lights the average will reduce because you have covered the distance in a longer time...exactly as you have assumed.

What you do not know is whether the pairs of cameras in the average assessment are placed with a traffic light junction between them or not. Not all pairs are spaced and placed as you may have assumed so the average may well be worked out between pairs that have no regular stop between them.

I don't know anything of this particular installation but I would be surprised if a traffic light junction was placed within the assessment zone if it created a significant interference.

You are right about your assumption that the average speed camera will not take the knob racing off from a traffic light into account...we have police for that.

Rowanosborne

Original Poster:

21 posts

188 months

Sunday 30th March 2014
quotequote all
CharlieBangBang said:
The averaging law will work with the lights. If you stop at the lights the average will reduce because you have covered the distance in a longer time...exactly as you have assumed.

What you do not know is whether the pairs of cameras in the average assessment are placed with a traffic light junction between them or not. Not all pairs are spaced and placed as you may have assumed so the average may well be worked out between pairs that have no regular stop between them.

I don't know anything of this particular installation but I would be surprised if a traffic light junction was placed within the assessment zone if it created a significant interference.

You are right about your assumption that the average speed camera will not take the knob racing off from a traffic light into account...we have police for that.
Appreciate your reply Charlie, This is the exact reason the camera's were justified to be installed was to stop the racing off the line as the traffic spreads into two lanes at the 3 pairs of traffic lights but then just after the junction it goes back into one lane causing people to race it really. The whole setup is essentially bait for a camera site.

The camera's are setup though as Camera > Light > Camera > Light > Camera > Light > Camera

There is no two camera's in the same zone without a light separating them. I can understand they do and will catch people doing 30 and jumping the lights before they change etc but if you have to stop your average decreases so whats the need :')

CharlieBangBang

36 posts

154 months

Sunday 30th March 2014
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Rowanosborne said:
Appreciate your reply Charlie, This is the exact reason the camera's were justified to be installed was to stop the racing off the line as the traffic spreads into two lanes at the 3 pairs of traffic lights but then just after the junction it goes back into one lane causing people to race it really. The whole setup is essentially bait for a camera site.

The camera's are setup though as Camera > Light > Camera > Light > Camera > Light > Camera

There is no two camera's in the same zone without a light separating them. I can understand they do and will catch people doing 30 and jumping the lights before they change etc but if you have to stop your average decreases so whats the need :')
Well it would seem that it is there to act as a deterrent to speeding through a green light and to slow down those who may consider jumping the lights at amber or red so this is all catered for. With the lights between the entry and exit cameras there will be a massive reduction in the number of detected offenders. Sounds like a good deterrent system to me.

What is your problem with it; I can't work that out?

CharlieBangBang

36 posts

154 months

Sunday 30th March 2014
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to answer your specific question; the cameras will not accommodate the stop at the lights and work out an average speed by taking that time stopped out of the calculation.

Terminator X

20,984 posts

235 months

Sunday 30th March 2014
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It won't be clever. If your time between 2 linked camera's exceeds the average you'll get done. If you're stopped at the lights then unlikely to get done unless of course you then travel at 60mph between them etc.

TX.

Rowanosborne

Original Poster:

21 posts

188 months

Sunday 30th March 2014
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Just the system in general confuses me slightly. We are getting more in Grimsby but they will actually work properly as its dual carriageway no stops on them etc they have a roundabout in the middle of one section but i know these camera's can set up multiple zones etc so im sure if u do over 30mph on that roundabout u will be caught too.

Im aware how specs work on motorways etc but u don't stop much or ever. Just these speedspike ones confused me as i thought they may be programmed with the lights otherwise how would they work? I personally don't see the point in them then but they've caught ALOT of people (I have no clue how if that above info is correct about less chance of being caught doing above the speed if u have to stop)

Terminator X

20,984 posts

235 months

Sunday 30th March 2014
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http://roadangellive.com/2012/12/speedspike-camera...

Nice, ANPR is such a wonderful invention rolleyes

TX.

Rowanosborne

Original Poster:

21 posts

188 months

Sunday 30th March 2014
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Yeah :/ I aint its biggest fan, Its good for catching uninsured drivers and no tax etc but when its an honest mistake people have my sympathy. For speed though i agree with alot of camera's especially 50 on roadworks, If there is personnel working and i was with them id want it to be 50 also even then id feel nervous at times.

Just been driving down that way and had a quick peek at them abit more i noticed some lines on road. They still confuse me but if there just average camera's then i suppose its simple enough.

AL...Ease

2,679 posts

249 months

Sunday 30th March 2014
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Well, when the idea was explained in the Grimsby Evening Telegraph, they said that one of the reasons was to catch people jumping the red lights. This made me think that they must be linked to the lights somehow. If they are not, I'd be surprised as they have caught so many people.

Either way, I make sure that I rag the hell out of my car to get to 30MPH as soon as possible after the lights go green. It's a stupidly low speed limit and a road that isn't inherently hazardous. I don't know who the idiot is in North East Lincs Council that keeps reducing all of our speed limits and adding speed cameras, but they should retire.