The Impact of Speed Cameras on Speed-related Crashes over Time

Champness, Philip G. & Folkman, Lisa-Marie (2003) The Impact of Speed Cameras on Speed-related Crashes over Time. In 2003 Road Safety Research, Polcing and Education Conference, 24-26 September 2003, Sydney, NSW.


Since speed cameras were introduced in Queensland in May 1997 there has been a steady increase in the number of speed camera sites and the number of operational hours. However, infringements have not risen in line with this increase in speed enforcement. That is, over time there has been a gradual reduction in the number of speeding infringements issues as a proportion of the number of vehicles' speeds monitored by speed cameras. Superficially this data suggests that speed cameras are effective in reducing speeding. An alternative interpretation is that motorists are reducing their speed at known camera locations, thus avoiding detection, but still speeding at locations where they do not expect to encounter any speed enforcement. If the infringement to vehicles monitored ratio is a system wide indication of the number of motorists speeding, then a decline in this infringement ratio should be roughly parallelled by a corresponding reduction in speed related crashes. This paper will analyse infringement data, speed camera deployment data and speed related crash data in order to clarify the effects that speed cameras are having on speeding and crashes. In particular, the ratio of infringements to the number of hours of speed camera operation, speed related crashes and the surrogate measures of serious injury and fatality crashes will be investigated. Interpretations of the results and recommendations will be made.

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ID Code: 9287
Item Type: Conference Paper
Refereed: No
Additional Information: For more information, please refer to the conference’s website (see link) or contact the author. Author contact details:
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Subjects: Australian and New Zealand Standard Research Classification > COMMERCE MANAGEMENT TOURISM AND SERVICES (150000) > TRANSPORTATION AND FREIGHT SERVICES (150700) > Road Transportation and Freight Services (150703)
Australian and New Zealand Standard Research Classification > STUDIES IN HUMAN SOCIETY (160000) > CRIMINOLOGY (160200) > Causes and Prevention of Crime (160201)
Divisions: Current > Research Centres > Centre for Accident Research & Road Safety - Qld (CARRS-Q)
Current > QUT Faculties and Divisions > Faculty of Health
Copyright Owner: Copyright 2003 (please consult author)
Copyright Statement: The contents of this conference can be freely accessed online via the conferences’s web page (see link).
Deposited On: 03 Sep 2007 00:00
Last Modified: 04 Nov 2009 02:55

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