Article from: www.thenewspaper.com/news/02/259.asp
In just three weeks, new digital SPECS speed averaging cameras have generated 84,000 tickets and £5 million (US $9.6 million) in revenue. Unlike radar and road sensor based cameras, these devices measure a car's speed by averaging the time it takes to travel between two or more camera units. Situated high above the road, the relatively small SPECS cameras are not in the motorist's sight line. Because they do not use a flash, drivers will have no idea if they are caught until they get a ticket in the mail weeks later.Mark McArthur-Christie, of the Association of British Drivers, said: "Specs systems are a licence to print money. There can be no otherSource: Is this the sneakiest speed trap in Britain? (Daily Express (UK), 3/14/2005)
reason to install them. The Partnership has created a very dangerous situation. If drivers know they're going to get flashed for driving at 21mph they will not dare to lift their eyes from the speedometer.