Tag: DUI

Study: Evidence Fails to Support DUI Impairment Levels for Cannabis

By Paul Armentano, NORML WASHINGTON, DC — Available science fails to support the imposition of driving under the influence (DUI) impairment thresholds for cannabis in a manner that is analogous to the per se limits already in place for alcohol, according to the conclusions of a November 2014 publication published by the United States Department of …

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Zero Tolerance Driving Policy for Cannabis Struck Down by Arizona Supreme Court

By Associated Press Authorities can’t prosecute Arizona motorists for driving under the influence of marijuana unless the person is impaired at the time of the stop, the state Supreme Court ruled Tuesday in the latest opinion on an issue that several states have grappled with across the nation. The ruling overturned a state Court of …

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New NIDA Study: THC Blood Levels Do Not Accurately Measure Intoxication

A new study from the National Institute on Drug Abuse has offered revealing information on the perceived correlation between cannabis consumption rates and THC blood concentration levels. Researchers examined the blood and plasma levels of both frequent and occasional cannabis consumers, before and after smoking. Frequent and occasional smokers resided on a closed research unit …

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