Roadside saliva based testing for amphetamine-type stimulants in drivers: An evaluation of the relationship between positive drug tests and driving impairment after the consumption of methamphetamine and MDMA

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Since the implementation of random saliva tests for illicit substances in Victoria, 1 in 48 drivers intercepted have tested positive to the presence of methamphetamine. Because amphetamines have been reported to increase road crash risk, this finding highlights a significant road traffic problem. The proposed research will provide information on the most accurate saliva drug test to detect the presence of methamphetamine and MDMA in drivers, and will also provide data on the appropriate amphetamine cut-off level that relates to driving impairment. Accurate drug detection measures will result in better detection of drivers impaired by amphetamines, and in turn deter drivers from driving after consuming amphetamines.