Study reveals how booze and weed mess with your driving
NCT ID NCT02709954
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at how alcohol and cannabis, alone or together, affect driving and thinking. About 40 occasional users aged 21–55 will take part. They will inhale low-dose THC (like a quarter of a joint) and drink alcohol, then test their driving on a simulator and complete questionnaires. The goal is to better understand the risks of driving under the influence.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
delta-9-THC and ethanol
What this could lead to
If successful, this study could help understand how alcohol and cannabis together impair driving, informing safety guidelines and public policy.
What could go wrong
This is a small, early-phase study with only 40 participants, so results may not apply to everyone. It uses a driving simulator, not real roads, and focuses on occasional users.
Disclaimer
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This is a summary of
the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Biological Studies Unit, VA Connecticut Healthcare System
West Haven, Connecticut, 06516, United States