Cannabis Effects on Driving Performance: Clinical Considerations

Medical Cannabis and Cannabinoids
2023
Brianna Costales, Shanna L. Babalonis, Joshua D. Brown, & Amie J. Goodin

Key Points

  • Driving under the influence of cannabis has been identified as a public health concern as medical and recreational cannabis availability increases in some countries.
  • A recent randomized clinical trial found similar levels of acute driving impairment with THC-dominant cannabis and with a combination of THC-CBD equivalent cannabis using on-road driving tests that provided real-world conditions; however, CBD-dominant cannabis did not produce significant cognitive or psychomotor impairment compared with placebo in this trial.
  • Media coverage of this study conveyed the findings as CBD-dominant cannabis not causing driving impairment while THC-dominant cannabis does, with the latter lasting up to 4 h post-dose.
  • It is recommended that clinicians counsel about the risks of driving impairment when patients disclose use of cannabis products containing THC.

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