Study reveals how booze and weed impair your driving

NCT ID NCT02710097

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 ability and thinking. About 40 occasional cannabis users who also drink alcohol will use a driving simulator after taking controlled doses. The goal is to understand the risks of driving under the influence of these substances.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

cannabis and alcohol

What this could lead to

If successful, this study could help understand how alcohol and cannabis together impair driving, potentially leading to better safety guidelines.

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.

Disclaimer Read more

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.

cannabis dependence

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Biological Studies Unit, VA Connecticut Healthcare System

    West Haven, Connecticut, 06516, United States