A Michigan commission tasked with studying the effects of cannabis on driving has recommended that the state not impose limits on the amount of THC that can be present in drivers’ bodies. The Impaired Driving Safety Committee issued the recommendation in a report that was released last week after spending nearly two years exploring the issue. The panel of six members appointed by former Gov. Rick Snyder reviewed published scientific research and conducted roadside tests with the Michigan State Police to complete its work. Members of the committee include a medical marijuana patient and law enforcement, forensic toxicology, cannabis pharmacology, and traffic safety professionals.
The committee determined that while cannabis use can have an effect on driving, the level of THC in a driver’s blood is not a reliable indicator of driving impairment. Instead, Committee member Norbert Kaminski, a professor of pharmacology and toxicology at Michigan State University, recommended that police use roadside sobriety tests.
“The only reasonable way to do this right now is to demonstrate that people are impaired,” said Kaminski.
The committee also recommended additional training to detect impaired driving for law enforcement officers and a campaign to educate the public on the dangers of driving while high.