Effect of the Victorian zero BAC legislation on serious casualty accidents: July 1984-December 1985

Mohammed Ohidul Haque, Max Cameron

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The zero BAC legislation was introduced in Victoria on May 22, 1984, to reduce the alcohol-related accidents for novice drivers and riders. The accident effects of the legislation were examined only for car drivers involved in serious casualty accidents (SCAs), using intervention time series analysis and the pre-post method. "Alcohol times," that is, times during which the proportions of SCAs involving alcohol have been shown to be higher, were used as a surrogate for alcohol involvement. The analysis indicated a reduction of about 4% in the number of learner, first-year probationary, unlicensed, and disqualified drivers involved in SCAs at alcohol times over the 18-month postlegislation period. The statistical power of the analysis was very poor. Hence, it was not possible to determine conclusively whether the result was due to chance variation or to the legislation which did not achieve statistical significance because of poor analytical power.

Original languageEnglish
Pages (from-to)129-137
Number of pages9
JournalJournal of Safety Research
Issue number3
Publication statusPublished - 1 Jan 1989

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