Marijuana smokers: Establish legal limit for THC-blood level
If people are allowed to drive after drinking — provided their blood-alcohol level is under the legal limit — then why shouldn't people be allowed to drive after smoking marijuana? That seems to be the question raised by a bill in the Colorado state legislature, which would set a legal limit of under five nanograms per milimeter of THC in a person's bloodstream.
As long as a driver's THC-blood level is under five nanograms, he would legally be allowed to drive. While some are in support of the current zero-tolerance policy, we agree with the idea of establishing a legal limit. If used responsibly, marijuana does not significantly impair a person's ability to drive. A 2004 National Highway Traffic Safety Administration study shows that marijuana, if used responsibly, does not significantly impair a person's ability to drive.
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