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Commission: Michigan should not set THC limit for motorists

Posted at 5:41 AM, Apr 01, 2019
The Impaired Driving Safety Commission recently forwarded its findings to Gov. Gretchen Whitmer and the Legislature after spending nearly two years studying how marijuana affects drivers.

The Lansing State Journal reports the panel recommended that Michigan set no limit for the amount of marijuana’s active ingredient is in a motorist’s blood.

The commission’s report says levels of tetrahydrocannabinol, or THC, in a person’s blood are not a “reliable indicator” of whether they’re impaired.

The panel instead recommended that the state continue to use roadside sobriety tests to determine if a driver is impaired.

Michigan approved medical marijuana use in 2008, and recreational marijuana use last year.