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Originally Posted by andygrif
But the point is that he was still speeding, so of course he will not succeed.
I'm in favour of those speed sensitive signs that light up if you're going too fast either in 30 zones or at accident black spots. They have been shown to be more effective at reducing speed and accidents.
Everyone slips over the speed limit from time to time, these signs are a gentle reality check that most people will respond to.
This is a separate issue to the guy who's trying it on. You're saying that the trigger is set too low or inaccurate. He's saying that the gap between photos is too long, which would exaggerate the offender's speed on the pictures.
Of course it might well be your speedo that's wrong, but you should let your local police service know that you have a concern about a specific camera.
I've heard that some people are using these to 'blind' Gatsos. As an part-time photographer I have a couple of these little units for fill-in flash, the sense when your main flashgun fires. Apparently some people are using them in the back window of their cars so that when the Gatso flashes them, this gizmo flashes back.
I don't know if it works, I'd be surprised given the distance, but I would say that anyone doing so needs beating - I wouldn't want to be driving behind a car that was setting off flashes in my face.
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Yes they are using them for that reason, I know someone who has designed one doing exactly that. He showed me a photo of the back of a car and the numberplate could not be read because the flash was located just above the numberplate, and had reacted quick enough to the flash from a normal camera flash.
I have played about with photo detectors, to detect the mobile speed cameras. It's just for a bit of fun to see how far away I could detect them, they have a mobile unit placed on a dual carraigeway on my way to work quite often. I can honestly say I am never above the 70MPh speed limit as I tend to doodle along about 65 these days, I was just playing around to see how effective I could be. I have been unable to any lasers of a suitable wavelength as yet at a reasonable cost to have some further fun with though!
(Note these would not be dangerous to other drivers as they would be unseen by the naked eye, but the mobile speed unit would not be happy)