Article from: www.thenewspaper.com/news/00/92.asp
 Several creative Australians have offered definitive proof that they received speed camera tickets when they were not speeding. For example, a milk truck driver accused of 73km/h in a 50km/h zone had his  delivery truck tested on a dyno. It established a speed beyond 45km/h would be impossible. The same traffic camera snapped a photo of a speeding parked car, and witnesses have made sworn statements that they saw the camera flashing even when no cars passed. Another man, Geoff Nadin, was driving in a 70km/h zone when a camera flashed him. His speedo read 67km/h and he had all his passengers verify this. When he contested the ticket claiming he was doing 87, charges were dropped and a subsequent investigation found pavement sensors were faulty.
Several creative Australians have offered definitive proof that they received speed camera tickets when they were not speeding. For example, a milk truck driver accused of 73km/h in a 50km/h zone had his  delivery truck tested on a dyno. It established a speed beyond 45km/h would be impossible. The same traffic camera snapped a photo of a speeding parked car, and witnesses have made sworn statements that they saw the camera flashing even when no cars passed. Another man, Geoff Nadin, was driving in a 70km/h zone when a camera flashed him. His speedo read 67km/h and he had all his passengers verify this. When he contested the ticket claiming he was doing 87, charges were dropped and a subsequent investigation found pavement sensors were faulty.Mr Nadin consulted the NRMA'sSource: Out of focus with the speed camera reality (Daily Telegraph (Sydney, Australia), 1/12/2005)
legal department before penning a lengthy letter of appeal including the
statements of witnesses. The fine was then dropped.
An internal investigation revealed a problem with the pavement sensor, or
piezo, that registered speed.
Any veneer about infallible speed cameras has been certainly stripped away in
Victoria.