A deterrence-based random breath testing (RBT) program has been in operation in the state of New South Wales since December 1982 as a countermeasure to drink-driving. The program is characterised by a high level of visible, state-wide enforcement activity throughout the year and extensive state-wide publicity. The effectiveness of the program is examined in this study in greater detail and over a longer time period than in previous studies, to give a comprehensive profile of its impact. Accidents are classified into "drinking hour" and "non-drinking hour" periods, based on an analysis of crashes in which driver alcohol concentrations were known. The RBT program was associated with a nett reduction nett reduction in drivers crashing during "drinking hours" of over 20 percent which has been maintained for 10 years. The results provide strong evidence that a well-structured RBT program can have substantial long-term road safety benefits. (A)
Samenvatting