The cameras, which combine number plate reading technology with a global positioning satellite receiver, are similar to those used in roadworks. The AA said it believed the new system could cover a network of streets as opposed to a straight line, and was “probably geared up to zones in residential areas.” The Home Office is testing the cameras at two sites, one in Southwark, London, and the other A374 between Antony and Torpoint in Cornwall. The `SpeedSpike’ system, which calculates average speed between any two points in the network, has been developed by PIPS Technology Ltd, an American-owned company with...