Safe Speed Forums

At what distance from you approximately?

Have you ever had an anomalous reading doing this (I don't mean an E03, I mean, say, 36 or 24 (other than when your accomplice is having a laff of course).


I'm confused. Are you saying you take a succession of readings and see that they fit on a straight line of either acceleration or deceleration?


Stephen this one is important: Are you saying you cannot lock on to the straight side of a box van, or the windscreen of a standard saloon? This I find hard to understand.

Replies.
1. As per CPS guidelines no more than 300m
30mph no more no less
2. You lock onto something solid which reflects back ie number plate with red dot on target continue to press trigger and watch readings its impossible to pick up another vehicle or moving object once locked onto target.
3. No, as you target number plate and since vehicle is coming towards or away from you red dot wouldnt record as would be too much of an angle to hit the side of a vehicle, the ame if you aim through the windscreen the machine just makes a tracking noise then after a second or so gives an error reading. due to it not hitting anything solid.
Stephen

Ok. I would ask one favour when you're next out with one of these guns, Stephen.

Firstly, when there are no other vehicles around, could you point the LTi2020 up the road nominally to where you would target a vehicle, and pan it down jus a tiny bit - and see if you can pick up a distance reading from the road?

If you can, and if you're up for it, get your friendly partner to drive toward you at 30 mph, and deliberately aim low - so the red dot is about midway between the number plate and the tarmac - on the front spoiler if the car has one - and see if you can "lock on" to that - and if you can get a reading from that. do this a few times if it's working - aiming low - on a few passes - and see if you get any spread of readings over and above the metaphorical thickness of the speedo needle on the car.

Very grateful for your help...

Stephen,

As you make emphasis that you take your readings from something solid, such as number plates, then could you tell me what part of a motorcycle you would take your readings from because as you know motorcycles do not have front number plates and also make very small targets.

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Useless laws weaken necessary laws.

For your Info I dont do motorcycles unless they are going away from me with the number plate at the rear in order to comply with what would appear an anomaly in the legislation, due to there being no front number plate on motorcycles.
Stephen

Roger,
I have done what you have asked a number of times now and do not get any distance readings or any other readings for that matter,all I seem to get is error messages or constant noise of the equipment trying to lock onto something solid, so no slip error do you want me to try anything else.
Stephen

Stephen & Cam Op,
At what distance is the object you do your camera to Lti alignment on?
fatboytim

My Laser Lti 20/20 doesn't have a camera attched to it it is a hand held only device. I calibrate it from a measured calibrated 50m distance.
Stephen

Can I assume these noises are not recorded on the video?

we are talking to different versions of the lti stephen uses a hand held, i use the tripod mounted lastec version



you assume correctly, suprising what you learn

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now retired

Yes please. Is there an area where you can get a decent slope of tarmac toward you, eg, from an overhead gantry? I am assuming your telescopic sight is sufficiently large that you could deliberately aim low, but consistently low, eg, have the number plate of an approaching vehicle just touching the upper edge of the FOV. Could you try that, please, and see what, if any, readings you can get? Sorry for delay - had electrical problems at home, just catching up with loadsastuff.

Cam OP,
Could you answer the distance alignment distance question, as you use the Lastec.
Thanks
Fatboytim