Colorado's per se threshold of five nanograms of active tetrahydrocannabinol (THC) per milliliter of blood, above which a driver may be presumed impaired.
Right Law Group's guide explains: "Ongoing changes to cannabis laws have made it easier for Colorado residents to purchase and consume marijuana. However, it is still illegal to drive while under the influence of cannabis ."
Source · Read guide ↗Each answer links directly to the source where a Right Law Group attorney addressed this question.
1 answers grounded in Right Law Group sources
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