Federal Study: THC-Positive Drivers Not More Likely to be Involved in Motor Vehicle Crashes

Federal Study: THC-Positive Drivers Not More Likely to be Involved in Motor Vehicle Crashes

WASHINGTON, DC — Drivers who test positive for the presence of THC in blood are no more likely to be involved in motor vehicle crashes than are drug-free drivers, according to a federally sponsored case-control study involving some 9,000 participants.

The study, published Friday by the United States National Highway Traffic Administration (NHTSA), is the first large-scale case-control study ever conducted in the United States to assess the crash risk associated with both drugs and alcohol use by drivers.

Authors reported that drivers who…

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