Lidar Question
Author
Discussion

giblet

Original Poster:

9,156 posts

207 months

Sunday 24th April 2016
quotequote all
Just spotted the following tweet -



Does the range refer to how far away they spotted the vehicle from? If so, what unit is it likely to be in? I've seen a few posts by the same account showing similar images recently.

0000

13,966 posts

221 months

Sunday 24th April 2016
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This manual seems to suggest the range is in feet as the speed is presumably MPH.

mybrainhurts

90,809 posts

285 months

Sunday 24th April 2016
quotequote all
It's 'Mercan and 'Mercans don't work in metres, so must feet.

Is this the gear that got a speed reading from a courtroom wall in 'Merica?

agtlaw

7,414 posts

236 months

Sunday 24th April 2016
quotequote all
One of the laser speedmeters used by West Yorkshire Police is the Kustom Pro Laser 3.

That's the range in feet. Using it at a range of around 400 metres is unremarkable.

The + symbol indicates that the target vehicle was oncoming.

Edited by agtlaw on Monday 25th April 08:36

FurtiveFreddy

8,577 posts

267 months

Sunday 24th April 2016
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Is 96mph considered remarkable in W. Yorkshire then?

agtlaw

7,414 posts

236 months

Sunday 24th April 2016
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Not if I'm driving.

Dogwatch

6,383 posts

252 months

Sunday 24th April 2016
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mybrainhurts said:
It's 'Mercan and 'Mercans don't work in metres, so must feet.

Is this the gear that got a speed reading from a courtroom wall in 'Merica?
If so it appears the 'Merican courts move faster than ours!

0000

13,966 posts

221 months

Sunday 24th April 2016
quotequote all
FurtiveFreddy said:
Is 96mph considered remarkable in W. Yorkshire then?
Just for Police Twitter users I'd imagine.

giblet

Original Poster:

9,156 posts

207 months

Sunday 24th April 2016
quotequote all
Cheers chaps. Anything in the 90 region seems to be posted up by them on Twitter. I just wondered what range the guns worked at, trying to keep my license clean!

agtlaw

7,414 posts

236 months

Sunday 24th April 2016
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Longest range I've seen is 701.6 metres. LTI 20/20.

HantsRat

2,409 posts

138 months

Sunday 24th April 2016
quotequote all
anonymous said:
[redacted]
Just a steady hand. Most readings at that distance though are captured from camera vans so the laser is mounted which makes readings at long distances easier.

tapereel

1,860 posts

146 months

Sunday 24th April 2016
quotequote all
The image is of a Pro Laser III.

It is made by Kustom in Kansas and is imported by Truvelo UK Ltd.

Maximum range in UK 4500ft and in USA 6000ft

Skilled operators can acquire targets at 4500 and 6000 ft whether hand-held or tripod mounted.

ricky302

19 posts

141 months

Sunday 24th April 2016
quotequote all
tapereel said:
Maximum range in UK 4500ft and in USA 6000ft

Skilled operators can acquire targets at 4500 and 6000 ft whether hand-held or tripod mounted.
A common statement is that 1 degree movement of the operator's hand moves the beam 6-7ft for every 100 yards the beam travels from the gun.

So at 4500 and 6000ft the beam end moves 97 to 130ft

cmaguire

3,589 posts

139 months

Sunday 24th April 2016
quotequote all
tapereel said:
The image is of a Pro Laser III.

It is made by Kustom in Kansas and is imported by Truvelo UK Ltd.

Maximum range in UK 4500ft and in USA 6000ft

Skilled operators can acquire targets at 4500 and 6000 ft whether hand-held or tripod mounted.
Perhaps you can provide evidence of a successful conviction at 4500ft where the device was hand-held by an aforementioned 'skilled operator'.
A wet dream I expect.

tapereel

1,860 posts

146 months

Monday 25th April 2016
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It always amuses me how many experts pop-up every time LIDAR is mentioned on a web forum.

The 6000' maximum range was so difficult to work that Kustom have now made the maximum range 8000' for the ProLaser IV; as the Americans say "Go-Figure".

Sits back ready for more amusing and nonsense commentary.

cmaguire

3,589 posts

139 months

Monday 25th April 2016
quotequote all
tapereel said:
It always amuses me how many experts pop-up every time LIDAR is mentioned on a web forum.

The 6000' maximum range was so difficult to work that Kustom have now made the maximum range 8000' for the ProLaser IV; as the Americans say "Go-Figure".

Sits back ready for more amusing and nonsense commentary.
Which UK Constabulary is using this ProLaserIV then?
And back to my original question....... Steady Eddie, the super-skilled operator with canteen bragging rights.

ATG

23,816 posts

302 months

Monday 25th April 2016
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anonymous said:
[redacted]
On a clear day you can easily see a car at that range. I'm gawping out the window now at a farm just over a mile away on the other side of the valley. I can see individual sheep, a well-known metric for the visibility of things round here.

cmaguire

3,589 posts

139 months

Monday 25th April 2016
quotequote all
ATG said:
On a clear day you can easily see a car at that range. I'm gawping out the window now at a farm just over a mile away on the other side of the valley. I can see individual sheep, a well-known metric for the visibility of things round here.
Seeing it is one thing. Pointing a house brick at it and convincing a court you got a valid reading off Bessie is a different story.

Try holding a rifle with telescopic sight and doing the same. And laser operators certainly ain't army snipers.


tapereel

1,860 posts

146 months

Monday 25th April 2016
quotequote all
ATG said:
anonymous said:
[redacted]
On a clear day you can easily see a car at that range. I'm gawping out the window now at a farm just over a mile away on the other side of the valley. I can see individual sheep, a well-known metric for the visibility of things round here.
Just measured 6,500' to a dual-carriageway that I can see out of my office window. I can see vehicles, tell you whether it is a truck, tanker, car, bus etc and what colour they are. If they were coming towards me or going away I would easily be able to measure their speed. Even easier with a x2 sight.
Perhaps those who have never used a LIDAR system might want to give it a go before they comment further.

esxste

4,292 posts

136 months

Monday 25th April 2016
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Doesn't America have lots and lots of very long straight roads?