SWOV Catalogus


Random roadside drug testing: a study into the prevalence of drug driving in a sample of Queensland motorists.
C 43285 (In: C 43218 CD-ROM) /83 / ITRD E216699
Davey, J. & Freeman, J.
In: Proceedings the 14th International Conference on Road Safety on Four Continents, Bangkok, Thailand 14-16 November 2007, 10 p., 29 ref.

Samenvatting Random road-side drug testing is becoming increasingly prevalent in a number of Australian states and overseas jurisdictions. This paper outlines research conducted to provide an estimate and comparison of the extent of drug driving in a sample of Queensland drivers. Oral fluid samples were collected from 781 drivers who volunteered to participate at Random Breath Testing (RBT) sites in a large Queensland regional area. Illicit substances tested for included cannabis (delta 9 tetrahydrocannibinol [THC]), amphetamine type substances, heroin and cocaine. Drivers also completed a self-report questionnaire regarding their drugrelated driving behaviour. Samples that were drug-positive at initial screening were sent to a government laboratory for confirmation. Oral fluid samples from 27 participants (3.5 per cent) were confirmed positive for at least one illicit substance. The most common drugs detected in oral fluid were cannabis (delta 9 THC) (n = 13) followed by amphetamine type substances (n = 11). A key finding was that cannabis was also confirmed as the most common self-reported drug combined with driving and that individuals who tested positive to any drug through oral fluid analysis were also more likely to report the highest frequency of drug driving. Furthermore, a comparison between drug vs drink driving detection rates for the study period revealed a higher detection rate for drug driving (3.5 per cent) vs drink driving (0.8 per cent). Thisearch provides evidence that drug driving is relatively prevalent on Queensland roads, and may in fact be more common than drink driving. The paper will further outline the study findings and present possible directions for future drug driving research. (A). For the covering abstract of the conference see E216632.
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