Wow - ours were bought from Germany and routinely clock cars at speeds in excess of 100mph, even in traffic. They use a combination of radar and laser, but a conventional film camera. New units coming on line this year use digital cameras. All of them can pick which is the speeding car in 3 or 4 lanes of oncoming traffic.I think that accuity is difficult to achieve at such high speeds. It might be a interesting math prolem to determine how fast the shutter must be to get a clear picture of a speeder at 70 MPH.
Here the registered owner of the car cops the fine and demerit points against his licence, unless he provides a signed confession from someone else... Companies with fleet vehicles cop a much higher fine, but no demerit points if they can't produce the driver who should be wearing the fine and points.I know of two facts required for a ticket to be processed. 1. Direct and clear of the driver's face, as well as a direct and clear image of the license.
There are photos circulating around Oz showing a motorbike being ridden at extremely high speeds (the speed camera photo shows the speed in an inset box) with his leg jackknifed around the back and his boot covering the licence plate.You can only imagine what the picture looked like, with a gorilla face, waving at the camera.
http://www.autoplates.com/photoshield/laser-shield.htm.Those are SO illegal here - big trouble if you're caught with them (or with radar detectors, and they have radar detector detectors). There is also a spray-on sold in bottles that goes on a conventional licence plate cover, but it's not waterproof and fades away. Also illegal, but harder to detect.
The problem in Australia is that they have now set the tolerance on these cameras down to 3kmh over the limit in some states, so if youre endangering all around you by travelling on a multi-lane freeway at 83kmh in an 80k zone, you get busted. Our cars are only required to have a speedo with a 5% accuracy, so you may not even be aware that you are speeding until you get the notice in the mail...
Cheers Russell C.
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