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Research shows that penalties for speeding such as demerit points or cost can often be an effective tool in reducing the number of accidents on our roads. The 'Cameras Save Lives' campaign by the Victorian Government is typical of the rationale.
The cost of infringements is extremely high in most Australian cities, though some face more punitive fines than others. This FACT indicates the cost of a speeding fine in each Australian city when the speed of the vehicle exceeds to exactly 15 km/hr over the designated speed limit. Note: the fine is for cars and not necessarily heavy vehicles.