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I wasn't caught, having been zapped a couple of months ago by a roadside camera and discovered a newfound respect for the law your honour, but there's a 500 m stretch of the A90 at laurencekirk that has had a 50 zone put in to protect the really awkward offset junction there - there were a couple of deaths IIRC that prompted it, so well sited IMO.
anyways, last time I was up there, having hit the 50 zone which is 400m short of the camera and reduced the cruise to 52 or thereabouts, i spotted a mobile van sitting right under the fixed speed camera at the junction - obviously looking to zap the idiots doing 70+ in the 50 zone, just before surfing down for the short stretch covered by the camera.
sneaky
Yes, I think that would work. The quantum thing.
I have used a Laser speed camera.
One by a manufaturer approved for supply to UK Police forces.
Very , Very simple to use . Aim at the front of the car. Pull trigger . Laser beam goes very , very fast toward car for literally a millisecond.
Reciever in camera 'sees' the 'bounce' of the light reflection. Usually the fromt number plate as its a highly reflective flat surface of a given size ( there is the reason why they are BS spec). If it isnt the number plate the reflective rear of the light clusters are very reflctive too, then the paint ( I have got readings from flat matt wrapped cars , just a tiny bit slower )
Laser then pings car again a few milleseconds later , and times the response . The difference is calculated into MPH.
Total acquisition time is very, very fast. Less than 2 seconds , sometimes less than 1.
This is as I uderstand it. I am not a policeman or physicist
If they set up 4 of the non-average cameras along a short stretch of road
That would be the Elland bypass.
That's basically it STM
They do throw false readings on certain vehicles.
Certain OEM and aftermarket door opening systems cause them to flag an error too as they often use the 902nm band.
Obviously I have no idea what ones they could be....
Years ago the average speed cameras used to only cover a particular lane so you could go at any speed, swop lanes at each camera and not get caught.
So the urban myth went anyway.
They changed the software a few years ago along with the type approval to remove that loophole.