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Impacts of Subsidized Ridesharing on Drunk Driving, Alcohol Consumption, and Mobility

Impacts of Subsidized Ridesharing on Drunk Driving, Alcohol Consumption, and Mobility

Non Recruiting
21 years and older
All
Phase N/A

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Overview

The purpose of this research study is to understand people's alcohol use in public places and their risks for harm. The overall goal of this study is to test the effects of subsidized ridesharing as an intervention to reduce self-reported alcohol-impaired driving, along with alcohol consumption and changes to mobility.

Description

Motor vehicle crashes are the leading cause of death for people aged 13-25 years in the US, and approximately 31% of all fatal crashes involved some alcohol use. Several peer-reviewed studies have found that ridesharing was associated with fewer alcohol-involved crashes and DUI arrests. Theories of behavioral economics provide a clear theoretical mechanism by which ridesharing will reduce alcohol-involved motor vehicle crashes compared to other private transportation. However, while ridesharing may be an effective intervention to reduce alcohol-involved crashes, it may simultaneously increase alcohol consumption. This study will assess the impacts of subsidized ridesharing on impaired driving, alcohol consumption, and mobility. Participants will be randomized to either receive a rideshare voucher or an online shopping voucher, and effects on alcohol impaired driving and alcohol consumption will be measured. A GPS sub-group will use a custom smartphone application for GPS tracking to measure mobility.

Eligibility

Inclusion Criteria:

  • ≥ 21 years old
  • Reside in a study city
  • Have a driver's license
  • Have access to a motor vehicle
  • Have consumed alcohol in a bar in the last 30 days
  • Own a smartphone
  • Read English

Exclusion Criteria:

  • Non-English speaking participants

Study details
    Driving Drunk
    Alcohol Drinking

NCT04949711

Columbia University

20 August 2025

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