Free uber vouchers might keep drunk drivers off the road
NCT ID NCT04949711
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether giving people subsidized rideshare vouchers (like Uber credits) could reduce drunk driving and alcohol consumption. Over 7,000 adults who drink at bars and own a car participated. Researchers compared those who received rideshare vouchers to those who received online shopping vouchers, tracking self-reported impaired driving and drinking habits over one week.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
ridesharing voucher
What this could lead to
If it works, this could point toward a simple, scalable way to reduce drunk driving by making safe rides home more affordable.
What could go wrong
This is a completed behavioral study, not a treatment trial. The results rely on self-reported data, which may not be fully accurate, and the effect may vary by city or population.
Disclaimer
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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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Columbia University Irving Medical Center
New York, New York, 10032, United States