http://www.aic.gov.au/publications/tand ... i311t.html
Over the past ten years, there has been considerable discussion of what is often called 'road rage'. Articles appear regularly in the academic literature and the press, and governments have been prompted to take action to control what seems to be a growing incidence of violence associated with motor vehicle use. But is road violence a real and growing crime problem, or simply an exaggeration by the press? Most importantly, how can this crime problem be measured in terms of its incidence and impact? This paper considers how best to define the problem and to quantify its extent. It offers some suggestions for improving data collection so that policy-makers can truly understand whether action is needed to deal with violence associated with driving.