More International Studies
International Studies do not provide support for SB8
At the August 2004 17th International Conference on Alcohol, Drugs, and Traffic Safety in Glasgow, Scotland, a group of physicians, forensic toxicologists and traffic scientists, led by Dr. Franjo Grotenhermen of Germany’s nova-Institut and Dr. Gunter Berghaus of the University of Cologne said “Commonly consumed doses of THC may cause maximum psychomotor impairment in some behavioral areas comparable to that equivalent to a BAC of above .08%. [However,] relevant acute effects typically subside within 3-4 hours after smoking… According to culpability studies, THC levels in blood serum below 5 ng/ml were not associated with an elevated accident risk. Even a THC serum level of between 5 and 10 ng/ml may not be associated with an elevated accident risk. [Therefore,] unless they are under the acute influence of the drug, both frequent and infrequent users of cannabis do not seem to have a higher accident risk than the non-users. While [zero tolerance laws] facilitate law enforcement, [they] may unfairly classify many occasional drug users as impaired, even if they responsibly separate use and driving… This is a problem particularly with driving under the influence of cannabis [because] THC, the psychoactive constituent in cannabis, and its metabolites may be detectable in blood and urine for days or even weeks after use.”