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Related Experiment Video

Updated: Dec 25, 2025

Driving Under the Influence: How Music Listening Affects Driving Behaviors
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State or market? How to effectively decrease alcohol-related crash fatalities and injuries.

Jose I Nazif-Muñoz1,2, Brice Batomen3, Youssef Oulhote4

  • 1Université de Sherbrooke, Longueuil, Canada jnazifmunoz@hsph.harvard.edu.

Journal of Epidemiology and Community Health
|April 3, 2020
PubMed
Summary
This summary is machine-generated.

Government laws significantly reduced alcohol-related crashes in Chile, while ridesharing services showed no significant impact. This study highlights the effectiveness of public policy interventions over private sector alternatives in curbing drunk driving incidents.

Keywords:
AlcoholChileUberinjuriesinterrupted time-seriespolicy evaluation

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Area of Science:

  • Public Health
  • Transportation Safety
  • Policy Evaluation

Background:

  • Alcohol-related traffic crashes cause over 270,000 global deaths annually.
  • Government interventions like Blood Alcohol Concentration (BAC) laws and stricter penalties aim to reduce drunk driving.
  • Ridesharing services are proposed as private sector solutions to mitigate alcohol-related crashes, but their effectiveness alongside public policies is unclear.

Purpose of the Study:

  • To evaluate the impact of state interventions (Zero Tolerance Law and Emilia Law) and ridesharing services (Uber) on alcohol-related traffic crashes in Chile.
  • To determine if public policies and private sector measures complement each other in reducing drunk driving.
  • To analyze trends in alcohol-related traffic fatalities and injuries in response to these interventions.

Main Methods:

  • Interrupted time-series analyses were employed using weekly data from 2010-2017.
  • Data included alcohol-related traffic fatalities and injuries per 1,000,000 population in Santiago, Valparaíso, and Concepción, Chile.
  • The study assessed the impact of the Zero Tolerance Law (ZTL), Emilia Law (EL), and Uber's launch on crash rates.

Main Results:

  • In Santiago, ZTL decreased crashes by 29.1%, EL by 41.0%; Uber showed a non-significant 28.0% decrease.
  • In Concepción, EL was associated with a 28.9% reduction in alcohol-related crashes.
  • In Valparaíso, ZTL showed a significant negative trend (-0.01) in weekly alcohol-related crashes per 1,000,000 population.

Conclusions:

  • State interventions (ZTL and EL) were associated with significant reductions in alcohol-related crashes in Chile.
  • The introduction of Uber ridesharing did not show a statistically significant impact on reducing these crashes.
  • The effectiveness of interventions varies by city and time, suggesting the influence of local factors on public policy outcomes.