Drug and Driving: A Compendium of Research Studies

Annotated Sources (cont'd)


17. Risser, D., Stichenwirth, M., Klupp, N., Schneider, B., Stimpfl, T., Vycudilik, W., and Bauer, G. (1998)

Journal of Forensic Sciences, 43(4): 817-820.


Study of drivers suspected of driving under the influence of drugs in Vienna, Austria

Population(s) and proportion tested (including type of study)

Stopped for reasons such as reckless driving, unsafe driving, driving at high speeds, etc.
Time period of 1993 to 1996

Drugs examined (threshold values for detection)
  • Cannabis
  • Benzodiazepines
  • Morphine
  • Cocaine
  • Méthadone
  • Amphetamines
  • Barbituriques
  • Alcohol
  • Methaqualone
Method of testing and medium used

Urine samples

Data obtained from police files and toxicology reports

Other dependent variables


Findings (including statistical methods)

66% with cannabis, 44% morphine, 23% cocaine, 14% methadone

Cannabis positive cases rose from 47% in 1993 to 72% in 1996, whereas morphine positive cases decreased (58% to 37%)

More than one drug detected in 48% of cases

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