Camera flash question
Camera flash question
Author
Discussion

Koyaanisqatsi

Original Poster:

2,563 posts

61 months

Monday 2nd November
quotequote all
30mph residential area, I'm driving at 30mph. A car overtakes me at great speed, probably 50mph+ and the camera flashes twice.

Obviously, no ticket for me as my speed can theoretically be calculated from the lines on the road, but can the speeding driver's speed still be calculated and ticket issued when there are either no interval lines in the oncoming lane, or my car is obscuring the lines on any still picture the camera did take? I remember we were near enough parallel when the flashes went off.

fourthpedal

192 posts

35 months

Tuesday 3rd November
quotequote all
The technology that measured the speed clearly isn't relying on the lines, or else the camera wouldn't have flashed. And I assume they must be able to prosecute, or else speeders would just cross to the other side of the road where the cameras are stationed to avoid a fine.

But truth be told, I have no idea what it's like in practice.

E-bmw

13,615 posts

183 months

Tuesday 3rd November
quotequote all
As above the lines on the road are a legacy and 100% not needed for any prosecution.

Simpo Two

93,053 posts

296 months

Tuesday 3rd November
quotequote all
E-bmw said:
As above the lines on the road are a legacy and 100% not needed for any prosecution.
A useful visual warning, though, that the driver is about to enter a zone of excessive road accidents...

E-bmw

13,615 posts

183 months

Tuesday 3rd November
quotequote all
Simpo Two said:
E-bmw said:
As above the lines on the road are a legacy and 100% not needed for any prosecution.
A useful visual warning, though, that the driver is about to enter a zone of excessive road accidents...
I generally prefer to use the signs that are many 100's of metres before the lines. wink

OutInTheShed

14,882 posts

57 months

Tuesday 3rd November
quotequote all
fourthpedal said:
The technology that measured the speed clearly isn't relying on the lines, or else the camera wouldn't have flashed. And I assume they must be able to prosecute, or else speeders would just cross to the other side of the road where the cameras are stationed to avoid a fine.

But truth be told, I have no idea what it's like in practice.
You're right.
You have no idea.

The classic Gatso uses doppler radar to trigger the camera.
The two photos a known time interval apart are the evidence for the prosecution.

fourthpedal

192 posts

35 months

Wednesday
quotequote all
OutInTheShed said:
fourthpedal said:
The technology that measured the speed clearly isn't relying on the lines, or else the camera wouldn't have flashed. And I assume they must be able to prosecute, or else speeders would just cross to the other side of the road where the cameras are stationed to avoid a fine.

But truth be told, I have no idea what it's like in practice.
You're right.
You have no idea.

The classic Gatso uses doppler radar to trigger the camera.
The two photos a known time interval apart are the evidence for the prosecution.
And yet people are still (at least on some occasions) prosecuted despite the lines being worn or missing, so clearly they aren't (unconditionally) necessary. I assume you've seen the threads about that on here?

E-bmw

13,615 posts

183 months

Wednesday
quotequote all
fourthpedal said:
OutInTheShed said:
fourthpedal said:
The technology that measured the speed clearly isn't relying on the lines, or else the camera wouldn't have flashed. And I assume they must be able to prosecute, or else speeders would just cross to the other side of the road where the cameras are stationed to avoid a fine.

But truth be told, I have no idea what it's like in practice.
You're right.
You have no idea.

The classic Gatso uses doppler radar to trigger the camera.
The two photos a known time interval apart are the evidence for the prosecution.
And yet people are still (at least on some occasions) prosecuted despite the lines being worn or missing, so clearly they aren't (unconditionally) necessary. I assume you've seen the threads about that on here?
Because they are NOT necessary for a prosecution.

2020vision

737 posts

27 months

Wednesday
quotequote all
Koyaanisqatsi said:
30mph residential area, I'm driving at 30mph. A car overtakes me at great speed, probably 50mph+ and the camera flashes twice.

Obviously, no ticket for me as my speed can theoretically be calculated from the lines on the road, but can the speeding driver's speed still be calculated and ticket issued when there are either no interval lines in the oncoming lane, or my car is obscuring the lines on any still picture the camera did take? I remember we were near enough parallel when the flashes went off.
Depends upon the speed camera at the scene.
Newer cameras require no lines, others do.
If the camera is one that needs lines and the lines are blocked by your car or the vehicle passes in another lane with no lines, the lines can be extended across the road or can be superimposed from images made by the same camera where the lines are clearly visible.
If the vehicle is driven at 50+ in a 30 mph speed limit, then I would think that a little additional effort to calculate the secondary speed would be justified. Only the primary speed needs to be adduced in evidence after a secondary check is successful. If there are questions about how it has been done then the secondary check can be adduced I am sure.
So the answer to your questions are "Yes", "Yes" and "Yes".

2020vision

737 posts

27 months

Wednesday
quotequote all
OutInTheShed said:
fourthpedal said:
The technology that measured the speed clearly isn't relying on the lines, or else the camera wouldn't have flashed. And I assume they must be able to prosecute, or else speeders would just cross to the other side of the road where the cameras are stationed to avoid a fine.

But truth be told, I have no idea what it's like in practice.
You're right.
You have no idea.

The classic Gatso uses doppler radar to trigger the camera.
The two photos a known time interval apart are the evidence for the prosecution.
...and neither do you. smile

2020vision

737 posts

27 months

Wednesday
quotequote all
E-bmw said:
fourthpedal said:
OutInTheShed said:
fourthpedal said:
The technology that measured the speed clearly isn't relying on the lines, or else the camera wouldn't have flashed. And I assume they must be able to prosecute, or else speeders would just cross to the other side of the road where the cameras are stationed to avoid a fine.

But truth be told, I have no idea what it's like in practice.
You're right.
You have no idea.

The classic Gatso uses doppler radar to trigger the camera.
The two photos a known time interval apart are the evidence for the prosecution.
And yet people are still (at least on some occasions) prosecuted despite the lines being worn or missing, so clearly they aren't (unconditionally) necessary. I assume you've seen the threads about that on here?
Because they are NOT necessary for a prosecution.
Depends upon the camera.
If the camera does depend upon the lines and they are worn, then previous images from the same camera can be used to superimpose the lines upon the images in which they are worn.

E-bmw

13,615 posts

183 months

Thursday
quotequote all
2020vision said:
If the camera does depend upon the lines and they are worn, then previous images from the same camera can be used to superimpose the lines upon the images in which they are worn.
So in other words they aren't needed then.

If they were NEEDED then superimposing previous images wouldn't be enough.

If they were NEEDED, then artificially putting them back from another image wouldn't be enough.

2020vision

737 posts

27 months

Thursday
quotequote all
E-bmw said:
2020vision said:
If the camera does depend upon the lines and they are worn, then previous images from the same camera can be used to superimpose the lines upon the images in which they are worn.
So in other words they aren't needed then.

If they were NEEDED then superimposing previous images wouldn't be enough.

If they were NEEDED, then artificially putting them back from another image wouldn't be enough.
They are.

Edited by 2020vision on Thursday 5th November 12:50

E-bmw

13,615 posts

183 months

2020vision said:
E-bmw said:
2020vision said:
If the camera does depend upon the lines and they are worn, then previous images from the same camera can be used to superimpose the lines upon the images in which they are worn.
So in other words they aren't needed then.

If they were NEEDED then superimposing previous images wouldn't be enough.

If they were NEEDED, then artificially putting them back from another image wouldn't be enough.
They are.

Edited by 2020vision on Thursday 5th November 12:50
So then they would NEED to be repainted.

2020vision

737 posts

27 months

E-bmw said:
2020vision said:
E-bmw said:
2020vision said:
If the camera does depend upon the lines and they are worn, then previous images from the same camera can be used to superimpose the lines upon the images in which they are worn.
So in other words they aren't needed then.

If they were NEEDED then superimposing previous images wouldn't be enough.

If they were NEEDED, then artificially putting them back from another image wouldn't be enough.
They are.

Edited by 2020vision on Thursday 5th November 12:50
So then they would NEED to be repainted.
They would. But that doesn't mean their absence prevents a prosecution.

You seem to be struggling with this. It is best not to guess when you don't know.

paul_c123

2,526 posts

24 months

2020vision said:
They would. But that doesn't mean their absence prevents a prosecution.

You seem to be struggling with this. It is best not to guess when you don't know.
If their absence doesn’t prevent a prosecution, then they’re not strictly needed. And…..I know how the English language works.

E-bmw

13,615 posts

183 months

paul_c123 said:
2020vision said:
They would. But that doesn't mean their absence prevents a prosecution.

You seem to be struggling with this. It is best not to guess when you don't know.
If their absence doesn t prevent a prosecution, then they re not strictly needed. And ..I know how the English language works.
You can't reason with him LOGICALLY, fun though it is to try. wink

mcpoot

1,686 posts

138 months

Yesterday (12:03)
quotequote all
2020vision said:
OutInTheShed said:
fourthpedal said:
The technology that measured the speed clearly isn't relying on the lines, or else the camera wouldn't have flashed. And I assume they must be able to prosecute, or else speeders would just cross to the other side of the road where the cameras are stationed to avoid a fine.

But truth be told, I have no idea what it's like in practice.
You're right.
You have no idea.

The classic Gatso uses doppler radar to trigger the camera.
The two photos a known time interval apart are the evidence for the prosecution.
...and neither do you. smile
Gobsmacked that someone should think OutInTheShed has no idea. biglaugh



Patio

2,077 posts

42 months

Yesterday (23:23)
quotequote all
I've never noticed a fixed camera flash before

Motorway gantry yes but not fixed on none motorway roads

Oh well, speed kills as they say